10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2018

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from              to

Commission File No. 001-36894

SOLAREDGE TECHNOLOGIES, INC.

(Exact name of registrant as specified in its charter)

Delaware		20-5338862
(State or other jurisdiction of incorporation or organization)		(IRS Employer Identification No.)
	1 HaMada StreetHerziliya Pituach 4673335, Israel(Address of principal executive offices, zip code)
	972 (9) 957-6620
	(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. 

Yes ☒          No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). 

Yes ☒          No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer”, “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐  (Do not check if a smaller reporting company)	Smaller Reporting Company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.         ☐

Indicate by checkmark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). 

Yes ☐          No ☒

As of  July 27, 2018, there were 45,498,414 shares of the registrant’s common stock, par value of $ 0.0001 per share, outstanding.

SOLAREDGE TECHNOLOGIES, INC.FORM 10-QFOR THE QUARTER ENDED JUNE 30, 2018 INDEX

PART I. FINANCIAL INFORMATION		3
ITEM 1	Financial Statements	3
Condensed Consolidated Balance Sheets as of June 30, 2018 (unaudited) and December 31, 2017		F-2
Condensed Consolidated Statements of Income for the three and six months ended June 30, 2018 and 2017 (unaudited)		F-4
Condensed Consolidated Statements of Comprehensive Income for the three and six months ended June 30, 2018 and 2017 (unaudited)		F-5
Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2018 and 2017 (unaudited)		F-6
Notes to the Condensed Consolidated Financial Statements (unaudited)		F-8
ITEM 2	Management’s Discussion and Analysis of Financial Condition and Results of Operations	4
ITEM 3	Quantitative and Qualitative Disclosures About Market Risk	16
ITEM 4	Controls and Procedures	17
PART II. OTHER INFORMATION		17
ITEM 1	Legal Proceedings	17
ITEM 1A	Risk Factors	18
ITEM 2	Unregistered Sales of Equity Securities and Use of Proceeds	18
ITEM 3	Defaults upon Senior Securities	18
ITEM 4	Mine Safety Disclosures	18
ITEM 5	Other Information	18
ITEM 6	Exhibits	19
EXHIBIT INDEX		19

2

PART I. FINANCIAL INFORMATION

ITEM 1          FINANCIAL STATEMENTS

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

INTERIM CONSOLIDATED FINANCIAL STATEMENTS

AS OF JUNE 30, 2018

IN U.S. DOLLARS

UNAUDITED

INDEX

	Page
Condensed Consolidated Balance Sheets as of June 30, 2018 (unaudited) and December 31, 2017	F-2 - F-3
Condensed Consolidated Statements of Income for the Three and Six Months Ended June 30, 2018 and 2017 (unaudited)	F-4
Condensed Consolidated Statements of Comprehensive Income for the Three and Six Months Ended June 30, 2018 and 2017 (unaudited)	F-5
Condensed Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2018 and 2017 (unaudited)	F-6 - F-7
Notes to the Condensed Consolidated Financial Statements (unaudited)	F-8 - F-27

3

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)

U.S. dollars in thousands (except share and per share data)

	June 30,		December 31,
	2018		2017
	Unaudited
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	214,540	$	163,163
Restricted cash		2,049		1,516
Marketable Securities		134,821		77,264
Trade receivables, net		118,103		109,528
Prepaid expenses and other accounts receivable		44,520		42,223
Inventories		102,014		82,992
Total current assets		616,047		476,686
LONG-TERM ASSETS:
Marketable securities	$	86,144	$	103,120
Property, equipment and intangible assets, net		68,532		52,297
Prepaid expenses and lease deposits		956		862
Deferred tax assets, net		11,551		8,340
Total long term assets		167,183		164,619
Total assets	$	783,230	$	641,305

The accompanying notes are an integral part of the condensed consolidated financial statements.

F - 2

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)

U.S. dollars in thousands (except share and per share data)

	June 30,			December 31,
	2018			2017
	Unaudited
LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
Trade payables, net	$	81,610		$	69,488
Employees and payroll accruals		23,510			22,544
Warranty obligations		18,964			14,785
Deferred revenues		3,407			2,559
Accrued expenses and other accounts payable		26,480			20,378
Total current liabilities		153,971			129,754
LONG-TERM LIABILITIES:
Warranty obligations		78,327			64,026
Deferred revenues		47,595			31,453
Lease incentive obligation		1,616			1,765
Non-current tax liabilities		16,830			16,840
Total long-term liabilities		144,368			114,084
COMMITMENTS AND CONTINGENT LIABILITIES
STOCKHOLDERS’ EQUITY:
Common stock of $0.0001 par value - Authorized: 125,000,000 shares as of June 30, 2018 (unaudited) and December 31, 2017; issued and outstanding: 45,498,414 and 43,812,601 shares as of June 30, 2018  (unaudited) and December 31, 2017, respectively		5			4
Additional paid-in capital		353,470			331,902
Accumulated other comprehensive loss		(1,138	)		(611	)
Retained earnings		132,554			66,172
Total stockholders’ equity		484,891			397,467
Total liabilities and stockholders’ equity	$	783,230		$	641,305

The accompanying notes are an integral part of the condensed consolidated financial statements.

F - 3

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited)

U.S. dollars in thousands (except share and per share data)

	Three months ended June 30,					Six months ended June 30,
	2018			2017		2018			2017
	Unaudited					Unaudited
Revenues	$	227,118		$	136,099	$	436,989		$	251,153
Cost of revenues		145,172			89,033		275,446			165,411
Gross profit		81,946			47,066		161,543			85,742
Operating expenses:
Research and development		19,551			12,725		37,426			24,183
Sales and marketing		15,954			11,961		32,159			22,736
General and administrative		5,776			3,265		10,465			7,704
Total operating expenses		41,281			27,951		80,050			54,623
Operating income		40,665			19,115		81,493			31,119
Financial income (expenses), net		(2,480	)		3,595		(1,896	)		5,005
Other expenses		-			-		64			-
Income before taxes on income		38,185			22,710		79,533			36,124
Taxes on income (tax benefit)		3,617			186		9,279			(575	)
Net income	$	34,568		$	22,524	$	70,254		$	36,699
Net basic earnings per share of common stock	$	0.76		$	0.54	$	1.57		$	0.88
Net diluted earnings per share of common stock	$	0.72		$	0.50	$	1.46		$	0.83
Weighted average number of shares used in computing net basic earnings per share of common stock		45,216,253			41,700,399		44,726,382			41,525,285
Weighted average number of shares used in computing net diluted earnings per share of common stock		48,291,280			44,831,590		47,984,817			44,335,521

The accompanying notes are an integral part of the condensed consolidated financial statements.

F - 4

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited)

U.S. dollars in thousands (except share and per share data)

	Three months ended June 30,						Six months ended June 30,
	2018			2017			2018			2017
	Unaudited						Unaudited
Net income	$	34,568		$	22,524		$	70,254		$	36,699
Other comprehensive income (loss):
Available-for-sale securities:
Changes in unrealized gains (losses) net of tax expenses (benefit)		(6	)		5			(516	)		33
Net change		(6	)		5			(516	)		33
Cash flow hedges:
Changes in unrealized gains, net of tax expense		-			66			-			975
Reclassification adjustments for loses, net of tax expense included in net income		-			(599	)		-			(994	)
Net change		-			(533	)		-			(19	)
Foreign currency translation adjustments, net		3			186			(11	)		(57	)
Total other comprehensive loss		(3	)		(342	)		(527	)		(43	)
Comprehensive income	$	34,565		$	22,182		$	69,727		$	36,656

The accompanying notes are an integral part of the condensed consolidated financial statements.

F - 5

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)

U.S. dollars in thousands

	Six months ended June 30,
	2018			2017
	Unaudited
Cash flows provided by operating activities:
Net income	$	70,254		$	36,699
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, equipment and intangible assets		5,053			3,130
Amortization of premiums on available-for-sale marketable securities		1,014			791
Stock-based compensation		13,977			7,646
Deferred tax assets, net		(3,018	)		(2,105	)
Loss on disposals of fixed assets		64			-
Changes in assets and liabilities:
Inventories		(18,952	)		11,153
Prepaid expenses and other accounts receivable		(2,135	)		(12,675	)
Trade receivables, net		(9,203	)		(8,399	)
Trade payables, net		12,143			2,007
Employees and payroll accruals		1,028			1,206
Warranty obligations		18,479			6,965
Deferred revenues		13,120			6,935
Accrued expenses and other accounts payable		6,194			3,958
Lease incentive obligation		(148	)		(148	)
Net cash provided by operating activities		107,870			57,163
Cash flows used in investing activities:
Purchase of property and equipment		(21,385	)		(7,611	)
Investment in available-for-sale marketable securities		(89,389	)		(74,106	)
Maturities of available-for-sale marketable securities		46,825			31,674
Net cash used in investing activities		(63,949	)		(50,043	)

The accompanying notes are an integral part of the condensed consolidated financial statements.

F - 6

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (Cont.)

U.S. dollars in thousands

	Six months ended June 30,
	2018		2017
	Unaudited
Cash flows from financing activities:
Proceeds from issuance of shares under stock purchase plan and upon exercise of stock-based awards		7,591		2,123
Net cash provided by financing activities		7,591		2,123
Net increase in cash, cash equivalents and restricted cash		51,512		9,243
Cash, cash equivalents and restricted cash at the beginning of the period		164,679		105,580
Effect of exchange rate differences on cash, cash equivalents and restricted cash		398		(274	)
Cash, cash equivalents and restricted cash at the end of the period	$	216,589	$	114,549

The accompanying notes are an integral part of the condensed consolidated financial statements.

F - 7

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 1:- GENERAL

a. SolarEdge Technologies, Inc. (the “Company”) and its subsidiaries design, develop, and sell an intelligent inverter solution designed to maximize power generation at the individual photovoltaic (“PV”) module level while lowering the cost of energy produced by the solar PV system and providing comprehensive and advanced safety features. The Company’s products consist mainly of (i) power optimizers designed to maximize energy throughput from each and every module through constant tracking of Maximum Power Point individually per module, (ii) inverters which invert direct current (DC) from the PV module to alternating current (AC) and (iii) a related cloud-based monitoring platform, that collects and processes information from the power optimizers and inverters of a solar PV system to enable customers and system owners as applicable, to monitor and manage the solar PV systems. In addition, the Company has a storage solution that is used to increase energy independence and maximize self-consumption for homeowners by utilizing a battery that is sold separately by third party manufacturers, to store and supply power as needed (the “StorEdge solution”). The StorEdge solution is designed to provide smart energy functions such as maximizing self-consumption, Time-of-Use programming for desired hours of the day, and home energy backup solutions.

The Company and its subsidiaries sell their products worldwide directly to large solar installers and engineering, procurement and construction firms (“EPCs”), as well as through large distributors and electrical equipment wholesalers to smaller solar installers.

b. New accounting pronouncements not yet effective:

In February 2016, the FASB issued Accounting Standards Update No. 2016-02 (Topic 842) "Leases." Topic 842 supersedes the lease requirements in Accounting Standards Codification (ASC) Topic 840, "Leases." Under Topic 842, lessees are required to recognize assets and liabilities on the balance sheet for most leases and provide enhanced disclosures. Leases will continue to be classified as either finance or operating. As currently issued, entities are required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. There are additional optional practical expedients that an entity may elect to apply. The Company is in the process of implementing changes to its systems and processes in conjunction with the review of lease agreements. The Company will adopt Topic 842 effective January 1, 2019 and expect to elect certain available transitional practical expedients.The Company is evaluating the potential impact of this pronouncement.

In January 2017, the FASB issued ASU 2017-04, "Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment". ASU 2017-04 was issued to simplify how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. The amendments in ASU 2017-04 are effective for fiscal years, and interim periods within those years, beginning after December 15, 2019.

The Company is evaluating the potential impact of this pronouncement.

In June 2018, the FASB issued ASU 2018-07, "Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting". ASU 2018-07 was issued to simplify several aspects of the accounting for nonemployee share-based payment transactions resulting from expanding the scope of Topic 718, Compensation - Stock Compensation, to include share-based payment transactions for acquiring goods and services from nonemployees. The amendments specify that Topic 718 applies to all share-based payment transactions in which a grantor acquires goods or services to be used or consumed in a grantor’s own operations by issuing share-based payment awards.

The Company will adopt the new standard effective July 1, 2018, and does not expect the adoption of this guidance to have a material impact on its consolidated financial statements.

F - 8

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 1:- GENERAL (Cont.)

c. Recently issued and adopted pronouncements:

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). Under the new standard, revenue is recognized when a customer obtains control of promised goods or services and is recognized in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. In addition, the standard requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flow arising from contracts with customers. The guidance permits two methods of modification: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (the modified retrospective method).  The Company adopted the new standard, effective January 1, 2018, using the modified retrospective method applied to those contracts which were not substantially completed as of the adoption date. See “Revenue Recognition” below for further details.

In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (ASU 2016-18), which requires companies to include amounts generally described as restricted cash and restricted cash equivalents in cash and cash equivalents when reconciling beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company adopted ASU 2016-18 during the first quarter of 2018. The adoption of this new guidance had no material impact on the Company’s condensed consolidated balance sheets, statements of income and cash flows.

Revenue Recognition:

The Company adopted Accounting Standards Codification 606, Revenue from Contracts with Customers (ASC 606), effective on January 1, 2018. As a result of this adoption, the Company revised its accounting policy for revenue recognition as detailed below.

The Company and its subsidiaries generate their revenues mainly from the sale of power optimizers, inverters and cloud-based monitoring services to distributors, installers and PV module manufacturers.

The Company recognizes revenue under the core principle that transfer of control to the Company’s customers should be depicted in an amount reflecting the consideration the Company expects to receive in revenue. In order to achieve that core principle, the Company applies the following five-step approach: (1) identify the contract with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when a performance obligation is satisfied.

(1) Identify the contract with a customer

A contract is an agreement between two or more parties that creates enforceable rights and obligations. In evaluating the contract, the Company analyzes the customer’s intent and ability to pay the amount of promised consideration (credit risk) and considers the probability of collecting substantially all of the consideration.

F - 9

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 1:- GENERAL (Cont.)

The Company determines whether collectability is reasonably assured on a customer-by-customer basis pursuant to its credit review policy. The Company typically sells to customers with whom it has a long-term business relationship and a history of successful collection. For a new customer, or when an existing customer substantiallyexpands its commitments, the Company evaluates the customer’s financial position, the number of years the customer has been in business, the history of collection with the customer, and the Customer’s ability to pay, and typically assigns a credit limit based on that review.

(2) Identify the performance obligations in the contract

At a contract’s inception, the Company assesses the goods or services promised in a contract with a customer and identifies the performance obligations.

The main performance obligations are the provisions of the following:

Power optimizers; Inverters; Storage solution; Cloud based monitoring services; Extended warranty services and Communication services.

(3) Determine the transaction price

The transaction price is the amount of consideration to which the Company is entitled in exchange for transferring promised goods or services to a customer, excluding amounts collected on behalf of third parties.

Generally, the Company does not provide price protection, stock rotation, and/or right of return. The Company determines the transaction price for all satisfied and unsatisfied performance obligations identified in the contract from contract inception to the beginning of the earliest period presented.

Rebates or discounts on goods or services are accounted for as variable consideration. The rebate or discount program is applied retrospectively for future purchases. Provisions for rebates, sales incentives, and discounts to customers are accounted for as reductions in revenue in the same period the related sales are recorded.

When a contract provides a customer with payment terms of more than a year, the Company considers whether those terms create variability in the transaction price and whether a significant financing component exists.

The performance obligations that extend for a period greater than one year are those that include a financial component: (i) warranty extension services, (ii) cloud-based monitoring, and (iii) communication services.

(4) Allocate the transaction price to the performance obligations in the contract

The Company performs an allocation of the transaction price to each separate performance obligation, in proportion to their relative standalone selling prices.

F - 10

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 1:- GENERAL (Cont.)

(5) Recognize revenue when a performance obligation is satisfied

Revenue is recognized when or as performance obligations are satisfied by transferring control of a promised good or service to a customer. Control either transfers over time or at a point in time, which affects when revenue is recorded.

Revenues from sales of products are recognized when control is transferred (based on the agreed International Commercial terms, or “INCOTERMS”). Revenues related to warranty extension services, cloud-based monitoring, and communication services are recognized over time on a straight-line basis.

Deferred revenues consist of deferred cloud-based monitoring services, communication services, warranty extension services and advance payments received from customers for the Company’s products. Deferred revenues are classified as short-term and long-term deferred revenues based on the period in which revenues are expected to be recognized.

The most significant impact of the standard on the Company’s financial statements relates to advance payments received for performance obligations that extend for a period greater than one year. Applying the new standard, such performance obligations are those that include a financing component, specifically: (i) warranty extension services, (ii) cloud-based monitoring, and (iii) communication services.

The Company recognizes financing component expenses in its condensed consolidated statement of income in relation to advance payments for performance obligations that extend for a period greater than one year. These financing component expenses are reflected in the Company’s deferred revenues balance.

The effect of the changes made to the consolidated January 1, 2018 balance sheets following the adoption of ASC 606, Revenue - Revenue from Contracts with Customers were as follows:

	Balance as of December 31, 2017		Adjustments due following adoption of ASC 606			Balance as of January 1, 2018
			Unaudited			Unaudited
Deferred Revenues - Current term	$	2,559	$	(89	)	$	2,470
Deferred Revenues -  Long term		31,453		3,961			35,414
Retained earnings	$	66,172	$	(3,872	)	$	62,300

F - 11

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 1:- GENERAL (Cont.)

In accordance with the new revenue standard requirements, the disclosure of the impact of adoption on the Company’s condensed consolidated statements of income, cash flows, and balance sheets were as follows:

	Three months ended June 30, 2018 (Unaudited)
	As Reported			Balances before adoption of ASC 606			Effect of change
Statements of operations
Revenues	$	227,118		$	227,067		$	51
Financial income (expenses), net		(2,480	)		(1,913	)		(567	)
Net income		34,568			35,084			(516	)
Cash flows
Net income		34,568			35,084			(516	)
Changes in assets and liabilities:
Deferred revenues		6,139			5,623			516

	Six months ended June 30, 2018 (Unaudited)
	As Reported			Balances before adoption of ASC 606			Effect of change
Statements of operations
Revenues	$	436,989		$	436,938		$	51
Financial income (expenses), net		(1,896	)		(817	)		(1,079	)
Net income		70,254			71,282			(1,028	)
Cash flows
Net income		70,254			71,282			(1,028	)
Changes in assets and liabilities:
Deferred revenues		13,120			12,092			1,028
Balance Sheets
Deferred Revenues - Current		(3,407	)		(3,413	)		6
Deferred Revenues -  Long term		(47,595	)		(42,689	)		(4,906	)
Retained earnings	$	(132,554	)	$	(136,426	)	$	3,872

F - 12

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 1:- GENERAL (Cont.)

d. Basis of Presentation:

The accompanying unaudited condensed consolidated interim financial statements have been prepared in accordance with Article 10 of Regulation S-X, “Interim Financial Statements” and the rules and regulations for Form 10-Q of the Securities and Exchange Commission (the “SEC”). Pursuant to those rules and regulations, the Company has condensed or omitted certain information and disclosures in footnotes that it normally includes in its annual consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”).

In management’s opinion, the Company has made all adjustments (consisting only of normal, recurring adjustments, except as otherwise indicated) necessary to fairly present its condensed consolidated financial position, results of operations, and cash flows. The Company’s interim period operating results do not necessarily indicate the results that may be expected for any other interim period or for the full fiscal year.

The significant accounting policies applied in the annual consolidated financial statements of the Company as of December 31, 2017, contained in the Company’s Annual Report on Form 10-K filed with the SEC on February 20, 2018, have been applied consistently in these unaudited interim condensed consolidated financial statements, except for the adoption of ASC 606, Revenue - Revenue from Contracts with Customers (see Note 1c).

e. The Company depends on three contract manufacturers and several limited or single source component suppliers. Reliance on these vendors makes the Company vulnerable to possible capacity constraints and reduced control over component availability, delivery schedules, manufacturing yields, and costs.

These vendors collectively accounted for 58.3% and 51.6% of the Company’s total trade payables as of June 30, 2018 (unaudited) and December 31, 2017, respectively.

The Company has the right to offset its payables to one of its contract manufacturers against vendor non-trade receivables. As of June 30, 2018 (unaudited), a total of $2,574 of these receivables met the criteria for net recognition and were offset against the corresponding accounts payable balances for this contract manufacturer in the accompanying condensed Consolidated Balance Sheets.

f. Derivative financial instruments:

To protect against the increase in value of forecasted foreign currency cash flows resulting from salary and lease payments of its Israeli facilities denominated in the Israeli currency, the New Israeli Shekels (“NIS”), the Company instituted a foreign currency cash flow hedging program. The Company hedged portions of the anticipated payroll and lease payments denominated in NIS for a period of one to twelve months with hedging contracts. Accordingly, when the dollar strengthens against the foreign currencies, the decline in present value of future foreign currency expenses is offset by losses in the fair value of the hedging contracts. Conversely, when the dollar weakens, the increase in the present value of future foreign currency cash flows is offset by gains in the fair value of the hedging contracts. These hedging contracts are designated as cash flow hedges, as defined by ASC 815 and are all effective hedges.

In addition to the above-mentioned cash flow hedges transactions, the Company also entered into derivative instrument arrangements to hedge the Company’s exposure to currencies other than the U.S. dollar. These derivative instruments are not designated as cash flow hedges, as defined by ASC 815, and therefore all gains and losses, resulting from fair value remeasurement, were recorded immediately in the statement of operations, as financial income (expenses).

F - 13

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 1:- GENERAL (Cont.)

As of June 30, 2018 (unaudited), the Company entered into forward contracts and put and call options to sell Euros for U.S. dollars in the amount of €22.5 million. These hedging contracts do not contain any credit-risk-related contingency features. See Note 4 for information on the fair value of these hedging contracts.

As of June 30, 2018 (unaudited), the Company had no derivative instruments that were designated as cash flow hedges

The fair value of the Company’s outstanding derivative instruments is as follows:

	Balance as of June 30,			Balance as of December 31,
	2018			2017
	(unaudited)
Derivative assets:
Derivatives not designated as cash flow hedging instruments:
Foreign exchange option contracts	$	340		$	221
Foreign exchange forward contracts		312			-
Total	$	652		$	221
Derivative liabilities:
Derivatives not designated as cash flow hedging instruments:
Foreign exchange option contracts	$	(24	)	$	(285	)
Foreign exchange forward contracts		-			(116	)
Total	$	(24	)	$	(401	)

The Company recorded the fair value of derivative assets and liabilities, net in “prepaid expenses and other accounts receivable” and in “Accrued expenses and other accounts payable” on the Company’s consolidated balance sheets as of June 30, 2018 and December 31, 2017, respectively.

The net increase in unrealized gains recognized in “accumulated other comprehensive loss” on derivatives, net of tax effect, is as follows:

	Three months ended				Six months ended
	June 30,				June 30,
	2018		2017		2018		2017
	(unaudited)				(unaudited)
Derivatives designated as cash flow hedging instruments:
Foreign exchange forward contracts		-	$	66		-	$	975

F - 14

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 1:- GENERAL (Cont.)

The net gains reclassified from “accumulated other comprehensive loss” into income, are as follows:

	Three months ended					Six months ended
	June 30,					June 30,
	2018		2017			2018		2017
	(unaudited)					(unaudited)
Derivatives designated as cash flow hedging instruments:
Foreign exchange forward contracts		-	$	(599	)		-	$	(994	)

The Company recorded in the financial income (expenses), net, a net loss (gain) related to derivatives not qualified as hedging instruments of $2,042 and $(672) during the three months ended June 30, 2018 and 2017 (unaudited), respectively and $625 and $(672) during the six months ended June 30, 2018 and 2017 (unaudited), respectively.

g. Accumulated other comprehensive income:

The following table summarizes the changes in accumulated balances of other comprehensive income (loss), net of taxes, for the three months ended June 30, 2018 (unaudited):

	Unrealized gains (losses) on available-for-sale marketable securities			Unrealized gains (losses) on foreign currency translation			Total
Beginning balance	$	(943	)	$	(192	)	$	(1,135	)
Net other comprehensive income (loss) before reclassifications		(6	)		3			(3	)
Net current period other comprehensive income (loss)		(6	)		3			(3	)
Ending balance	$	(949	)	$	(189	)	$	(1,138	)

The following table summarizes the changes in accumulated balances of other comprehensive income (loss), net of taxes, for the six months ended June 30, 2018 (unaudited):

	Unrealized losses on available-for-sale marketable securities			Unrealized losses on foreign currency translation			Total
Beginning balance	$	(433	)	$	(178	)	$	(611	)
Net other comprehensive loss before reclassifications		(516	)		(11	)		(527	)
Net current period other comprehensive loss		(516	)		(11	)		(527	)
Ending balance	$	(949	)	$	(189	)	$	(1,138	)

F - 15

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 1:- GENERAL (Cont.)

The following table summarizes the changes in accumulated balances of other comprehensive income (loss), net of taxes, for the three months ended June 30, 2017 (unaudited):

	Unrealized gains (losses) on available-for-sale marketable securities			Unrealized gains (losses) on cash flow hedges			Unrealized gains (losses) on foreign currency translation			Total
Beginning balance	$	(108	)	$	533		$	(450	)	$	(25	)
Net other comprehensive income before reclassifications		5			66			186			257
Net gains reclassified from accumulated other comprehensive loss		-			(599	)		-			(599	)
Net current period other comprehensive income (loss)		5			(533	)		186			(342	)
Ending balance	$	(103	)	$	-		$	(264	)	$	(367	)

The following table summarizes the changes in accumulated balances of other comprehensive income (loss), net of taxes, for the six months ended June 30, 2017 (unaudited):

	Unrealized gains (losses) on available-for-sale marketable securities			Unrealized gains (losses) on cash flow hedges			Unrealized gains (losses) on foreign currency translation			Total
Beginning balance	$	(136	)	$	19		$	(207	)	$	324
Net other comprehensive income (loss) before reclassifications		33			975			(57	)		951
Net gains reclassified from accumulated other comprehensive income (loss)		-			(994	)		-			(994	)
Net current period other comprehensive income (loss)		33			(19	)		(57	)		(43	)
Ending balance	$	(103	)	$	-		$	(264	)	$	(367	)

F - 16

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 1:- GENERAL (Cont.)

Thefollowing table provides details about reclassifications out of accumulated other comprehensive income (loss) (unaudited):

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss					Affected Line Item in the Statements of Income
	Three months ended June 30,
	2018		2017
Unrealized gains on cash flow hedges, net	$	-	$	108		Cost of revenues
		-		363		Research and development
		-		92		Sales and marketing
		-		82		General and administrative
		-		645		Total, before income taxes
		-		(46	)	Income tax expense (benefit)
	$	-	$	599		Total, net of income taxes

Thefollowing table provides details about reclassifications out of accumulated other comprehensive income (loss) (unaudited):

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss					Affected Line Item in the Statements of Income
	Six months ended June 30,
	2018		2017
Unrealized gains on cash flow hedges, net	$	-	$	166		Cost of revenues
		-		570		Research and development
		-		151		Sales and marketing
		-		153		General and administrative
		-		1,040		Total, before income taxes
		-		(46	)	Income tax expense (benefit)
	$	-	$	994		Total, net of income taxes

F - 17

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 2:- INVENTORIES

	June 30, 2018		December 31, 2017
	(unaudited)
Raw materials	$	28,842	$	25,887
Finished goods		73,172		57,105
	$	102,014	$	82,992

NOTE 3:- WARRANTY OBLIGATIONS

Changes in the Company’s product warranty liability for the six months ended June 30, 2018 and 2017 were as follows:

	Six months ended June 30,
	2018			2017
	(unaudited)
Balance, at beginning of period	$	78,811		$	58,375
Additions and adjustments to cost of revenues		27,546			12,976
Utilization and current warranty expenses		(9,066	)		(6,011	)
Balance, at end of period		97,291			65,340
Less current portion		(18,964	)		(12,501	)
Long term portion	$	78,327		$	52,839

NOTE 4:- FAIR VALUE MEASUREMENTS

The Company applies ASC 820 (“Fair Value Measurements and Disclosures”), with respect to fair value measurements of all financial assets and liabilities.

Fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or a liability.

A three-tiered fair value hierarchy is established as a basis for considering such assumptions and for inputs used in the valuation methodologies in measuring fair value:

Level 1- Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets.

Level 2- Include other inputs that are directly or indirectly observable in the marketplace.

Level 3- Unobservable inputs which are supported by little or no market activity.

F - 18

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 4:- FAIR VALUE MEASUREMENTS (Cont.)

The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

The following table sets forth the Company’s assets and liabilities that were measured at fair value as of June 30, 2018 (unaudited) by level within the fair value hierarchy:

	Balance as of		Fair value measurements
Description	June 30, 2018		Level 1		Level 2		Level 3
Cash equivalents:
Money market mutual funds	$	6,641	$	6,641		-		-
Derivative instruments assets, net	$	628		-	$	628		-
Short-term marketable securities:
Corporate bonds	$	128,847		-	$	128,847		-
Governmental bonds	$	5,974		-	$	5,974		-
Long-term marketable securities:
Corporate bonds	$	80,208		-	$	80,208		-
Governmental bonds	$	5,936		-	$	5,936		-

The following table sets forth the Company’s assets that were measured at fair value as of December 31, 2017 by level within the fair value hierarchy:

	Balance as of			Fair value measurements
Description	December 31, 2017			Level 1		Level 2			Level 3
Cash equivalents:
Money market mutual funds	$	6,163		$	6,163		-			-
Derivative instruments liability, net	$	(180	)		-	$	(180	)		-
Short-term marketable securities:
Corporate bonds	$	68,272			-	$	68,272			-
Governmental bonds	$	8,992			-	$	8,992			-
Long-term marketable securities:
Corporate bonds	$	95,160			-	$	95,160			-
Governmental bonds	$	7,960			-	$	7,960			-

F - 19

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 4:- FAIR VALUE MEASUREMENTS (Cont.)

In addition to the assets described above, the Company’s financial instruments also include cash and cash equivalents, restricted and short-term deposits, trade receivables, other accounts receivable, trade payables, accrued expenses and other payables. The fair value of these financial instruments was not materially different from their carrying values on June 30, 2018 due to the short-term maturity of these instruments.

NOTE 5:- COMMITMENTS AND CONTINGENT LIABILITIES

a. Guarantees:

As of June 30, 2018 (unaudited), contingent liabilities exist regarding guarantees in the amount of $1,389, $55, $176 and $342 in respect of office rent lease agreements, customs transactions, credit card limits and securing projects with customers, respectively.

b. Contractual purchase obligations:

The Company has contractual obligations to purchase goods and raw materials. These contractual purchase obligations relate to inventories held by contract manufacturers and purchase orders initiated by the contract manufacturers and suppliers, which cannot be canceled without penalty. The Company utilizes third parties to manufacture its products. In addition, it acquires raw materials or other goods and services, including product components, by issuing to suppliers authorizations to purchase based on its projected demand and manufacturing needs.

As of June 30, 2018 (unaudited), the Company had non-cancelable purchase obligations totaling approximately $321,135 out of which the Company already recorded a provision for loss in the amount of $2,393.

As of June 30, 2018, the Company had contractual obligations for capital expenditures totaling approximately $35,810. These commitments reflect purchases of automated assembly lines and other machinery related to the Company’s manufacturing.

c. Legal claims:

From time to time, the Company may be involved in various claims and legal proceedings. The Company reviews the status of each matter and assesses its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and the amount can be reasonably estimated, the Company accrues a liability for the estimated loss. These accruals are reviewed at least quarterly and adjusted to reflect the impact of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular matter.

In June 2018, the Company was served with a complaint from a trustee of a former customer that filed for bankruptcy in the US. The lawsuit seeks to recover approximately $2,481 based on theories of preferential and fraudulent transfers. The company believes it has valid defenses to the claims in this lawsuit and does not expect the outcome of the litigation matters to have a material adverse effect on its Balance Sheets, Statements of Income or Cash Flows.

F - 20

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 6:- STOCK CAPITAL

a. Common Stock:

	Authorized				Issued and outstanding
	Number of shares
	June 30, 2018		December 31, 2017		June 30, 2018		December 31, 2017
	(unaudited)				(unaudited)
Stock of $0.0001 par value:
Common stock		125,000,000		125,000,000		45,498,414		43,812,601

b. Stock Incentive plans:

The Company’s 2007 Global Incentive Plan (the “2007 Plan”) was adopted by the board of directors on August 30, 2007. On March 31, 2015, once the Company completed its Initial Public Offering (“IPO”), the 2007 Plan has been terminated and no further awards will be granted thereunder. All outstanding awards will continue to be governed by their existing terms and 379,358 available options for future grant were transferred to the Company’s 2015 Global Incentive Plan (the “2015 Plan”) and are reserved for future issuances under the 2015 plan.

The 2015 Plan became effective upon the consummation of the IPO. The 2015 Plan provides for the grant of options, RSUs and other share-based awards to directors, employees, officers and consultants of the Company and its Subsidiaries. As of June 30, 2018 (unaudited), a total of 8,080,717 (unaudited) shares of common stock were reserved for issuance under the 2015 Plan (the “Share Reserve”).

The Share Reserve will automatically increase on January 1st of each year during the term of the 2015 Plan commencing on January 1st of the year following the year in which the 2015 Plan becomes effective in an amount equal to five percent (5%) of the total number of shares of capital stock outstanding on December 31st of the preceding calendar year; provided, however, that our board of directors may provide that there will not be a January 1st increase in the Share Reserve in a given year or that the increase will be less than five percent (5%) of the shares of capital stock outstanding on the preceding December 31st.

The aggregate maximum number of shares of common stock that may be issued on the exercise of incentive stock options is ten million (10,000,000).

As of June 30, 2018 (unaudited), an aggregate of 3,611,297 shares of common stock are still available for future grant under the 2015 Plan.

F - 21

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 6:- STOCK CAPITAL (Cont.)

c. Options granted to employees and members of the board of directors:

A summary of the activity in the share options granted to employees and members of the board of directors for the six months ended June 30, 2018 (unaudited) and related information follows:

						Weighted
						average
				Weighted		remaining
	Number			average		contractual		Aggregate
	of			exercise		term		intrinsic
	Options			price		in years		Value
Outstanding as of December 31, 2017		3,524,310			7.40		6.35		106,251
Granted		180,983			38.05
Exercised		(1,219,007	)		4.86
Forfeited or expired		(22,677	)		8.46
Outstanding as of June 30, 2018		2,463,609			10.90		6.68		91,022
Vested and expected to vest as of June 30, 2018		2,395,526			10.81		6.66		88,724
Exercisable as of June 30, 2018		1,564,382			7.12		5.93		63,722

The aggregate intrinsic value represents the total intrinsic value (the difference between the fair value of the Company’s common stock as of the last day of each period and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their options on the last day of each period. The total intrinsic value of options exercised during the six months ended on June 30, 2018 (unaudited) was $56,071.

The weighted average grant date fair values of options granted to employees and executive directors during the six months ended June 30, 2018 (unaudited) was $20.83.

d. A summary of the activity in the RSUs granted to employees and members of the board of directors for the six months ended June 30, 2018 (unaudited) is as follows:

	No. of RSUs			Weighted average grant date fair value
Unvested as of December 31, 2017		2,087,992			24.33
Granted		531,729			48.15
Vested		(393,939	)		21.16
Forfeited		(125,989	)		6.62
Unvested as of June 30, 2018		2,099,793			30.71

F - 22

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 6:- STOCK CAPITAL (Cont.)

e.          Options and RSUs issued to non-employee consultants:

The Company has granted options and RSUs to purchase common shares to non-employee consultants as of June 30, 2018 (unaudited) as follows:

	Outstanding				Exercisable
	as of				as of
	June 30,		Exercise		June 30,		Exercisable
Issuance Date	2018		price		2018		Through
January 27, 2014		225		3.51		31	January 27, 2024
May 1, 2014		1,205		3.51		1,205	May 1, 2024
September 17, 2014		3,936		3.96		3,831	September 17, 2024
October 29, 2014		2,139		5.01		361	October 29, 2024
August 19, 2015		6,981		0.00		-	-
November 8, 2015		928		0.00		-	-
April 18, 2016		834		0.00		-	-
July 11, 2016		1,167		0.00		-	-
September 21, 2016		2,500		15.34		250	September 21, 2026
September 21, 2016		3,938		0.00		-	-
March 15, 2017		6,000		0.00		-	-
March 15, 2017		6,500		13.70		500	March 15, 2027
March 27, 2017		3,000		0.00		-	-
November 20, 2017		5,250		0.00		-	-
January 2, 2018		6,160		0.00		-	-
		50,763				6,178

The Company had accounted for its options and RSUs granted to non-employee consultants under the fair value method of ASC 505-50.

In connection with the grant of stock options and RSUs to non‑employee consultants, the Company recorded stock compensation expenses in the six months ended June 30, 2018 (unaudited) and 2017 (unaudited) in the amounts $835 and $294, respectively.

f. Employee Stock Purchase Plan (“ESPP”):

The Company adopted an Employee Stock Purchase Plan (the “ESPP”) effective upon the consummation of the IPO. As of June 30, 2018 (unaudited), a total of 1,739,280 shares were reserved for issuance under this plan. The number of shares of common stock reserved for issuance under the ESPP will increase automatically on January 1st of each year, for ten years, by the lesser of 1% of the total number of shares of the Company’s common stock outstanding on December 31st of the preceding calendar year or 487,643 shares. However, the Company’s board of directors may reduce the amount of the increase in any particular year at their discretion, including a reduction to zero.

F - 23

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 6:- STOCK CAPITAL (Cont.)

The ESPP is implemented through an offering every six months. According to the ESPP, eligible employees may use up to 10% of their salaries to purchase common stock shares up to an aggregate limit of $10 per participant for every six months plan. The price of an ordinary share purchased under the ESPP is equal to 85% of the lower of the fair market value of the ordinary share on the subscription date of each offering period or on the purchase date.

As of June 30, 2018 (unaudited), 323,342 common stock shares had been purchased under the ESPP.

As of June 30, 2018 (unaudited), 1,415,938 common stock shares were available for future issuance under the ESPP.

In accordance with ASC No. 718, the ESPP is compensatory and as such results in recognition of compensation cost.

g. Stock-based compensation expense for employees and consultants:

The Company recognized stock-based compensation expenses related to stock options and RSUs granted to employees and non-employees and ESPP in the condensed consolidated statement of operations for the six months ended on June 30, 2018 (unaudited) and 2017 (unaudited), as follows:

	Three months ended June 30,				Six months ended June 30,
	2018		2017		2018		2017
Cost of revenues	$	968	$	517	$	1,892	$	1,010
Research and development		2,605		1,280		4,987		2,485
Selling and marketing		2,094		1,204		4,298		2,234
General and administrative		1,461		1,033		2,800		1,917
Total stock-based compensation expense	$	7,128	$	4,034	$	13,977	$	7,646

As of June 30, 2018 (unaudited), there was a total unrecognized compensation expense of $70,363 related to non‑vested equity‑based compensation arrangements granted under the Company’s Plans. These expenses are expected to be recognized during the period from July 1, 2018 through May 31, 2022.

NOTE 7:- BASIC AND DILUTED NET EARNINGS PER SHARE

Basic net earnings per share is computed by dividing the net earnings by the weighted-average number of shares of common stock outstanding during the period.

No shares were excluded from the calculation of diluted net earnings per share due to their anti-dilutive effect for the three and six months ended June 30, 2018 (unaudited).

The total weighted average number of shares related to the outstanding stock options, excluded from the calculation of diluted net earnings per share due to their anti-dilutive effect was 199,950 and 395,032 for the three and six months ended June 30, 2017 (unaudited), respectively.

F - 24

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 7:- BASIC AND DILUTED NET EARNINGS PER SHARE (Cont.)

The following table presents the computation of basic and diluted net earnings per share for the periods presented (in thousands, except per share data):

	Three months ended June 30,				Six months ended June 30,
	2018		2017		2018		2017
	(unaudited)				(unaudited)
Numerator:
Net income	$	34,568	$	22,524	$	70,254	$	36,699
Denominator:
Shares used in computing net earnings per share of common stock, basic		45,216,253		41,700,399		44,726,382		41,525,285
Effect of stock-based awards		3,075,027		3,131,191		3,258,435		2,810,236
Shares used in computing net earnings per share of common stock,  diluted		48,291,280		44,831,590		47,984,817		44,335,521
Basic net income per share	$	0.76	$	0.54	$	1.57	$	0.88
Diluted net income per share	$	0.72	$	0.50	$	1.46	$	0.83

NOTE 8:-        INCOME TAXES

a. Taxes on income (tax benefit) are comprised as follows:

	Three months ended June 30,						Six months ended June 30,
	2018			2017			2018			2017
	(unaudited)						(unaudited)
Current year taxes	$	5,314		$	959		$	12,297		$	2,028
Deferred tax income net, and others		(1,697	)		(773	)		(3,018	)		(2,603	)
Taxes on income (tax benefit)	$	3,617		$	186		$	9,279		$	(575	)

b. Deferred income taxes:

Deferred income taxes reflect the net tax effect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes.

F - 25

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 8:-        INCOME TAXES (Cont.)

Significant components of the Company’s deferred tax liabilities and assets are as follows:

	June 30,		December 31,
	2018		2017
	(Unaudited)
Net assets in respect of:
Research and Development carryforward expenses- temporary differences	$	7,229	$	5,380
Stock based compensation		2,093		1,622
Allowances, provisions and others		2,229		1,338
Net deferred tax assets	$	11,551	$	8,340

c. Uncertain tax positions:

As of June 30, 2018, the Company recognized a total liability for uncertain tax positions in an immaterial amount.

d. On December 22, 2017, the Tax Cuts and Jobs Act (the "TCJA") was signed into law making significant changes to U.S. income tax law. These changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017, the transition of U.S. international taxation from a worldwide tax system to a territorial system, and a one-time transition tax on the mandatory deemed repatriation of cumulative foreign earnings (the “E&P”) as of December 31, 2017.

During the fourth quarter of 2017, the Company calculated its best estimate of the impact of the TCJA in its year end income tax provision in accordance with its understanding of the TCJA and guidance available as of the date of this filing and as a result recorded $19.2 million as an additional income tax expense in the fourth quarter of 2017, the period in which the legislation was enacted.

The provisional amount related to the remeasurement of certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future was $0.5 million. The provisional amount related to the one-time transition tax on the mandatory deemed repatriation of foreign earnings was $18.7 million based on cumulative foreign earnings of $145 million. An additional provisional charge of $0.8 million was recorded in the first quarter of 2018 as a result of IRS guidance issued in January.

Additionally, the TCJA requires certain Global Intangible Low Taxed Income (“GILTI”) earned by controlled foreign corporations (“CFCs”) to be included in the gross income of the CFCs’ U.S. shareholder.  GAAP allows the Company to either: (i) treat taxes due on future U.S. inclusions in taxable income related to GILTI as a current-period expense when incurred (the “period cost method”); or (ii) factor such amounts into its measurement of deferred taxes (the “deferred method”).  Effective the first quarter of 2018, the Company elected to treat any potential GILTI inclusions as a period cost, as we are not projecting any material impact from GILTI inclusions and any deferred taxes related to any inclusion would be immaterial.

F - 26

SOLAREDGE TECHNOLOGIES, INC.

AND ITS SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

U.S. dollars in thousands (except share and per share data)

NOTE 8:-        INCOME TAXES (Cont.)

The Company has calculated its best estimate of the impact of the GILTI income tax provision in accordance with its understanding of the TCJA and guidance available as of the date of this filing, and as a result has recorded $3.9 million as an additional income tax expense for the six month ended June 30, 2018.

The final impact of the U.S. tax reform may differ, possibly materially, due to factors such as changes in interpretations and assumptions that the Company has made in its assessment, conclusion of the effects of the GILTI provisions, further refinement of the Company’s calculations, and additional guidance that may be issued by the U.S. government.

As these various factors are finalized, any change will be recorded as an adjustment to the provision for, or benefit from, income taxes in the period in which the amounts are determined, not to exceed 12 months from the date of enactment of the TCJA. The Company has not completed its assessment and the tax charge remains provisional as of June 30, 2018.

NOTE 9:- CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS

a. For the three month period ended June 30, 2018 (unaudited) and 2017 (unaudited), the Company had one major customer that accounted for 16.25% and 13.31% of its consolidated revenues, respectively.

For the six month period ended June 30, 2018 (unaudited) and 2017 (unaudited), the Company had one major customer that accounted for 18.24% and 13.05% of its consolidated revenues, respectively.

b. As of June 30, 2018 (unaudited),one major customer accounted forapproximately 18.3% of the Company’s net accounts receivable and asof December31,2017, two major customers accounted for approximately 35.2% of the Company’s net accounts receivable.

NOTE 10:-     SUBSEQUENT EVENTS

On May 9, 2018, the Company signed an agreement for the purchase of substantially all of the assets and activities of Gamatronic Electronic Industries Ltd (“Gamatronic”), a company established in Israel, providing and manufacturing Uninterruptible Power Supplies (UPS) devices.

On July 1, 2018 the Company completed the acquisition of substantially all of the assets and activities of Gamatronic for approximately NIS 41 million (approximately USD 11.2 million), in cash. Asset purchase agreement also includes an earn-out provision of 50% and 33% of the business division’s net income for the first and second years following closing, respectively.  Company determined that such acquisition will be accounted as a business combination in accordance with ASC 805 "Business Combinations”. Currently, management assessing the acquisition consideration, purchase price allocation and the related accounting consequences of the acquisition, which, if any, will be reflected in the third quarter interim financial statement.

F - 27

ITEM 2          MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward-Looking Statements

Statements contained in this Form 10-Q or statements incorporated by reference from documents we have filed with the Securities and Exchange Commission may contain forward-looking statements that are based on our management’s expectations, estimates, projections, beliefs and assumptions in accordance with information currently available to our management. Forward-looking statements should be read in conjunction with our unaudited condensed consolidated financial statements and related notes included in Part 1, Item 1 of this report. This discussion contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements include information concerning our possible or assumed future results of operations, business strategies, technology developments, new products and services, financing and investment plans, dividend policy, competitive position, industry and regulatory environment, potential acquisitions and growth opportunities, and the effects of competition. Forward-looking statements include statements that are not historical facts and can be identified by terms such as “anticipate,” “believe,” “could,” “seek,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “should,” “will,” “would” or similar expressions and the negatives of those terms.

Forward looking statements involve known and unknown risks, uncertainties and other factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward looking statements. Given these uncertainties, you should not place undue reliance on forward looking statements. Also, forward looking statements represent our management’s beliefs and assumptions only as of the date of this filing. Important factors that could cause actual results to differ materially from our expectations include:

· future demand for solar energy solutions;

· changes to net metering policies or the reduction, elimination or expiration of government subsidies and economic incentives for on‑grid solar electricity applications;

· changes in the U.S. trade environment, including the recent imposition of import tariffs;

· federal, state and local regulations governing the electric utility industry with respect to solar energy;

· the retail price of electricity derived from the utility grid or alternative energy sources;

· interest rates and supply of capital in the global financial markets in general and in the solar market specifically;

· competition, including introductions of power optimizer, inverter and solar photovoltaic (“PV”) system monitoring products by our competitors;

· developments in alternative technologies or improvements in distributed solar energy generation;

· historic cyclicality of the solar industry and periodic downturns;

· defects or performance problems in our products;

· our ability to forecast demand for our products accurately and to match production with demand;

· our dependence on ocean transportation to deliver our products in a cost effective manner;

· our dependence upon a small number of outside contract manufacturers;

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· capacity constraints, delivery schedules, manufacturing yields and costs of our contract manufacturers and availability of components;

· delays, disruptions and quality control problems in manufacturing;

· shortages, delays, price changes or cessation of operations or production affecting our suppliers of key components;

· business practices and regulatory compliance of our raw material suppliers;

· performance of distributors and large installers in selling our products;

· our customer’s financial stability, creditworthiness and debt leverage ratio;

· our ability to retain key personnel and attract additional qualified personnel;

· our ability to effectively design, launch, market and sell new generations of our products and services;

· our ability to maintain our brand and to protect and defend our intellectual property;

· our ability to retain, and events affecting, our major customers;

· our ability to manage effectively the growth of our organization and expansion into new markets;

·      our ability to integrate acquired businesses;

· fluctuations in currency exchange rates;

· unrest, terrorism or armed conflict in Israel;

· general economic conditions in our domestic and international markets;

· consolidation in the solar industry among our customers and distributors; and

· the other factors set forth under “Item 1A. Risk Factors” in “Part II-OTHER INFORMATION” section of this report.

Except as required by law, we assume no obligation to update these forward‑looking statements, or to update the reasons actual results could differ materially from those anticipated in these forward‑looking statements, even if new information becomes available in the future.

Overview

We have invented an intelligent inverter solution that has changed the way power is harvested and managed in a solar PV system. Our direct current (“DC”) optimized inverter system is designed to maximize power generation at the individual PV module level while lowering the cost of energy produced by the solar PV system and providing comprehensive and advanced safety features. Supporting increased PV proliferation, the SolarEdge system consists of power optimizers, inverters, communication and smart energy management solutions, and a cloud-based monitoring platform. SolarEdge’s solutions addresses a broad range of solar market segments, from residential solar installations to commercial and small utility-scale solar installations.  We believe that these benefits, along with our comprehensive and advanced safety features, are highly valued by our customers.

Our revenues for the three months ended June 30, 2018 and 2017 were $227.1 million and $136.1 million, respectively. Gross margin was 36.1% and 34.6% for the three months ended June 30, 2018 and 2017, respectively. Net income was $34.6 million and $22.5 million for the three months ended June 30, 2018 and 2017, respectively.

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Our revenues for the six months ended June 30, 2018 and 2017 were $437.0 million and $251.2 million, respectively. Gross margin was 37.0% and 34.1% for the six months ended June 30, 2018 and 2017, respectively. Net income was $70.3 million and $36.7 million for the six months ended June 30, 2018 and 2017, respectively.

As of June 30, 2018, we have shipped approximately 27.9 million power optimizers and 1,163,900 inverters. Approximately 680,000 installations, many of which may include multiple inverters, are currently connected to, and monitored through, our cloud‑based monitoring platform. As of June 30, 2018, we have shipped approximately 8.5 GW of our DC optimized inverter systems. Our products are sold in approximately 50 countries, and are installed in solar PV systems in 133 countries.

On July 1, 2018, we closed a previously-announced asset purchase from Gamatronic Electronics Ltd. (“Gamatronic”), a company that develops, manufactures and sells Uninterruptible Power Supply systems, also known as UPSs.  We purchased substantially all of Gamatronic’s assets, including its intellectual property, brand and tangible assets, for approximately $11.2 million and includes a two year earn out provision for 50% and 33% of the net income of the Gamatronic’s business in the first and second years following the closing, respectively.

Key Operating Metrics

In managing our business and assessing financial performance, we supplement the information provided by the financial statements with other operating metrics. These operating metrics are utilized by our management to evaluate our business, measure our performance, identify trends affecting our business and formulate projections. We use metrics relating to shipments (inverters shipped, power optimizers shipped and megawatts shipped) to evaluate our sales performance and to track market acceptance of our products. We use metrics relating to monitoring (systems monitored) to evaluate market acceptance of our products and usage of our solution.

We provide the “megawatts shipped” metric, which is calculated based on nameplate capacity shipped, to show adoption of our system on a nameplate capacity basis. Nameplate capacity shipped is the maximum rated power output capacity of an inverter and corresponds to our financial results in that higher total capacities shipped are generally associated with higher total revenues. However, revenues increase with each additional unit, not necessarily each additional MW of capacity, sold. Accordingly, we also provide the “inverters shipped” and “power optimizers shipped” operating metrics.

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Inverters shipped		113,767		75,020		213,413		132,781
Power optimizers shipped		2,737,524		1,774,480		5,213,068		3,244,157
Megawatts shipped (1)		985		563		1,785		1,018

——————

(1) Calculated based on the aggregate nameplate capacity of inverters shipped during the applicable period. Nameplate capacity is the maximum rated power output capacity of an inverter as specified by the manufacturer.

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Results of Operations

The results of operations presented below should be reviewed in conjunction with the condensed consolidated financial statements and related notes included elsewhere in this report.

The following table sets forth selected consolidated statements of income data for each of the periods indicated.

	Three Months Ended June 30,					Six Months Ended June 30,
	2018			2017		2018			2017
	(In thousands)					(In thousands)
Revenues	$	227,118		$	136,099	$	436,989		$	251,153
Cost of revenues		145,172			89,033		275,446			165,411
Gross profit		81,946			47,066		161,543			85,742
Operating expenses:
Research and development		19,551			12,725		37,426			24,183
Sales and marketing		15,954			11,961		32,159			22,736
General and administrative		5,776			3,265		10,465			7,704
Total operating expenses		41,281			27,951		80,050			54,623
Operating income		40,665			19,115		81,493			31,119
Financial income (expenses), net		(2,480	)		3,595		(1,896	)		5,005
Other expenses		-			-		64			-
Income before taxes on income		38,185			22,710		79,533			36,124
Taxes on income (tax benefit)		3,617			186		9,279			(575	)
Net income	$	34,568		$	22,524	$	70,254		$	36,699

Comparison of the Three Months Ended June 30, 2018 and 2017

Revenues

	Three Months Ended June 30,				Three Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(in thousands)
Revenues	$	227,118	$	136,099	$	91,019	66.9	%

Revenues increased by $91.0 million, or 66.9%, for the three months ended June 30, 2018 as compared to the three months ended June 30, 2017, primarily due to an increase in the number of systems sold, with significant growth in revenues coming from US, Netherlands, Germany and Australia. Non-U.S. revenues comprised 47.8% of our revenues in the three months ended June 30, 2018 as compared to 45.9% in the three months ended June 30, 2017. The number of power optimizers sold increased by approximately 1.1 million units, or 63.6%, from approximately 1.7 million units in the three months ended June 30, 2017 to approximately 2.8 million units in the three months ended June 30, 2018. The number of inverters sold increased by approximately 41,000 units, or 57.2%, from approximately 72,000 units in the three months ended June 30, 2017 to approximately 113,000 units in the three months ended June 30, 2018. Overall, blended average selling price (“ASP”) per Watt decreased by 10.5% in the three months ended June 30, 2018 as compared to the three months ended June 30, 2017. This blended ASP erosion is attributed to several reasons the main being:

· change in the mix of products towards higher portion of commercial products that are characterized with lower ASP per Watt in comparison to residential products;

7

· price declines of our commercial products initiated by the compamy in order to increase market share in this segment;

· the introduction of new commercial products with higher capacity which represent further lower ASP per watt;

· weaker Euro against the US Dollar which is translated to lower USD ASP combined with growing proportion of our Euro denominated revenues; and

· selective price decreases of our residential products.

Cost of Revenues and Gross Profit

	Three Months Ended June 30,				Three Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(in thousands)
Cost of revenues	$	145,172	$	89,033	$	56,139	63.1	%
Gross profit	$	81,946	$	47,066	$	34,880	74.1	%

Cost of revenues increased by 56.1 million, or 63.1%, in the three months ended June 30, 2018, as compared to the three months ended June 30, 2017, primarily due to:

· an increase in the volume of products sold;

· increased warranty expenses and warranty accruals of $6.9 million associated primarily with the rapid increase in our install base;

· increased shipment and logistical costs of $4.5 million attributed, in part, to the growth in volumes shipped, and to an increase in air shipments caused by power component shortages; and

· increased personnel-related costs of $2.7 million related to the expansion of our operations and support headcount which is growing in parallel to our growing install base worldwide.

Gross profit as a percentage of revenue increased from 34.6% in the three months ended June 30, 2017 to 36.1% in the three months ended June 30, 2018, primarily due to:

· reductions in per-unit production costs that exceeded price erosion of our products;

· increased efficiency in our supply chain; and

· general economies of scale in our personnel-related costs and other costs associated with our support and operations departments.

Research and Development

	Three Months Ended June 30,				Three Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(in thousands)
Research and development	$	19,551	$	12,725	$	6,826	53.6	%

Research and development increased by $6.8 million, or 53.6%, in the three months ended June 30, 2018 as compared to the three months ended June 30, 2017, primarily due to:

· an increase in personnel-related costs of $5.6 million resulting from an increase in our research and development headcount as well as salary expenses associated with employee equity compensation, resulting from the impact of the increase in our stock price affecting the fair value of any share award. The increase in headcount reflects our continuing investment in enhancements of existing products as well as development associated with bringing new products to market;

· expenses related to other directly related overhead costs and travel that increased by $0.5 million;

8

· expenses related to materials consumption that increased by $0.3 million;

· depreciation expenses related to lab equipment that increased by $0.3 million; and

· expenses related to consultants and sub‑contractors that increased by $0.1 million.

Sales and Marketing

	Three Months Ended June 30,				Three Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(in thousands)
Sales and marketing	$	15,954	$	11,961	$	3,993	33.4	%

Sales and marketing expenses increased by $4.0 million, or 33.4%, in the three months ended June 30, 2018 as compared to the three months ended June 30, 2017, primarily due to:

· an increase in personnel-related costs of $3.3 million as a result of an increase in headcount supporting our growth in the U.S., Europe, and the rest of the world, as well as salary expenses associated with employee equity compensation resulting from the impact of the increase in our stock price affecting the fair value of any share award;

· expenses related to other sales and marketing activity that increased by $0.3 million;

· expenses related to other overhead costs and travel that increased by $0.2 million;

· depreciation expenses increased by $0.1 million; and

· expenses related to external consultants and sub-contractors increased by $0.1 million.

General and Administrative

	Three Months Ended June 30,				Three Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(in thousands)
General and administrative	$	5,776	$	3,265	$	2,511	76.9	%

General and administrative expenses increased by $2.5 million, or 76.9%, in the three months ended June 30, 2018 as compared to the three months ended June 30, 2017, primarily due to:

· expenses related to external consultants and sub-contractors increased by $1.1 million, partially   due to legal proceedings initiated by us during the second quarter of 2018;

· an increase in personnel-related costs of $0.5 million related to (i) higher headcount in the legal, finance, human resources, and information technology department, principally as a result of our continued growthand (ii) changes in management compensation and increased expenses related to equity-based compensation, resulting from the impact of the increase in our stock price affecting the fair value of any share award;

· an increase in costs related to the accrual of doubtful & bad debts of $0.4 million; and

· other overhead costs, depriciation, and travel expenses, all of which combined increased by $0.5 million.

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Financial income, net

	Three Months Ended June 30,					Three Months Ended June 30, 2017 to 2018
	2018			2017		Change
	(in thousands)
Financial income (expenses), net	$	(2,480	)	$	3,595	$	(6,075	)	N/A

Financial expenses were $2.5 million in the three months ended June 30, 2018 compared to financial income of $3.6 million in the three months ended June 30, 2017, primarily due to:

· an increase of $8.6 million in foreign exchange fluctuations between the Euro and the New Israeli Shekel against the U.S. Dollar;

· an increase of $0.6 million in interest expenses related to advance payments received for performance obligations that extend for a period greater than one year, as part of the new revenue recognition standard adoption; and

· an increase of $0.1 million in other financial income and bank charges.

The increase in these expenses was offset by:

· a decrease of $2.7 million in costs related to hedging transactions; and

· an increase of $0.5 million in interest income and accretion (amortization) of discount (premium) on marketable securities.

Taxes on Income

	Three Months Ended June 30,				Three Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(in thousands)
Taxes on income	$	3,617	$	186	$	3,431	1,884.6	%

Taxes on income increase by $3.4 million in the three months ended June 30, 2018 as compared to the three months ended June 30, 2017, primarily due to:

· a provision of $2.4 million for Global Intangible Low Taxed Income (“GILTI”); and

· an increase of $1.9 million in current tax expenses in Israel triggered by the termination of the two year tax exemption in Israel which ends in 2018.

The increase in these expenses was offset by an increase of $0.9 million in deferred tax assets, net (presented as tax benefit).

Net Income

	Three Months Ended June 30,				Three Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(in thousands)
Net income	$	34,568	$	22,524	$	12,044	53.5	%

As a result of the factors discussed above, net income increased by $12.0 million, or 53.5%, in the three months ended June 30, 2018 as compared to the three months ended June 30, 2017.

10

Comparison of the Six Months Ended June 30, 2018 and 2017

Revenues

	Six Months Ended June 30,				Six Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(In thousands)
Revenues	$	436,989	$	251,153	$	185,836	74.0	%

Revenues increased by $185.8 million, or 74.0%, for the six months ended June 30, 2018 as compared to the six months ended June 30, 2017, primarily due to an increase in the number of systems sold, with significant growth in revenues coming from US, Netherlands, Germany and Australia. Non-U.S. revenues comprised 45.7% of our revenues for the six months ended June 30, 2018 compared to 41.6% for the six months ended June 30, 2017. The number of power optimizers sold increased by approximately 2.0 million units, or 63.9%, from approximately 3.2 million units in the six months ended June 30, 2017 to approximately 5.2 million units in the six months ended June 30, 2018. The number of inverters sold increased by approximately 82,000 units, or 63.3%, from approximately 130,000 units in the six months ended June 30, 2017 to approximately 212,000 units in the six months ended June 30, 2018. Our blended ASP per watt for units shipped decreased by $0.009, or 3.2%, in the six months ended June 30, 2018 as compared to the six months ended June 30, 2017. This blended ASP per Watt erosion is mainly attributed to the following items:

· change in the mix of products towards higher portion of commercial products that are characterized with lower ASP per Watt in comparison to residential product;

· price declines of our commercial products initiated by the compamy in order to increase market share in this segment;

· the introduction of new commercial products with higher capacity which represent further lower ASP per watt;

· weaker Euro against the US Dollar which is translated to lower USD ASP combined with growing proportion of our Euro denominated revenues; and

· selective price decreases of our residential products.

Cost of Revenues and Gross Profit

	Six Months Ended June 30,				Six Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(In thousands)
Cost of revenues	$	275,446	$	165,411	$	110,035	66.5	%
Gross profit	$	161,543	$	85,742	$	75,801	88.4	%

Cost of revenues increased by $110.0 million, or 66.5%, in the six months ended June 30, 2018, as compared to the six months ended June 30, 2017, primarily due to:

· an increase in the volume of products sold;

· increased warranty expenses and warranty accruals of $14.6 million associated primarily with the rapid increase in our install base;

· increased shipment and logistical costs of $10.7 million attributed, in part, to the growth in volumes shipped, and to an increase in air shipments caused by power component shortages; and

· increased personnel-related costs of $5.8 million related to the expansion of our operations and support headcount which is growing in parallel to our growing install base worldwide.

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Gross profit as a percentage of revenue increased from 34.1% in the six months ended June 30, 2017 to 37.0% in the six months ended June 30, 2018, primarily due to:

· reductions in per-unit production costs that exceeded price erosion of our products;

· increased efficiency in our supply chain; and

· general economies of scale in our personnel-related costs and other costs associated with our support and operations departments.

Research and Development

	Six Months Ended June 30,				Six Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(In thousands)
Research and development	$	37,426	$	24,183	$	13,243	54.8	%

Research and development increased by $13.2 million, or 54.8%, in the six months ended June 30, 2018 as compared to the six months ended June 30, 2017, primarily due to:

· an increase in personnel-related costs of $10.9 million resulting from an increase in our research and development headcount as well as salary expenses associated with employee equity compensation, resulting from the impact of the increase in our stock price affecting the fair value of any share award. The increase in headcount reflects our continuing investment in enhancements of existing products as well as development associated with bringing new products to market;

· expenses related to other directly related overhead costs and travel expenses that increased by $0.9 million;

· depreciation expenses related to lab equipment that increased by $0.6 million;

· expenses related to consultants and sub‑contractors that increased by $0.5 million; and

· expenses related to materials consumption increased by $0.3 million.

Sales and Marketing

	Six Months Ended June 30,				Six Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(In thousands)
Sales and marketing	$	32,159	$	22,736	$	9,423	41.4	%

Sales and marketing expenses increased by $9.4 million, or 41.4%, in the six months ended June 30, 2018 as compared to the six months ended June 30, 2017, primarily due to:

· an increase in personnel-related costs of $7.8 million as a result of an increase in headcount supporting our growth in the U.S., Europe, and the rest of the world, as well as salary expenses associated with employee equity compensation resulting from the impact of the increase in our stock price affecting the fair value of any share award;

· expenses related to other overhead costs and travel expenses that increased by $0.7 million;

· expenses related to other sales and marketing activity that increased by $0.6 million; and

· expenses related to external consultants and sub-contractors and depreciation expenses increased by $0.3 million.

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General and Administrative

	Six Months Ended June 30,				Six Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(In thousands)
General and administrative	$	10,465	$	7,704	$	2,761	35.8	%

General and administrative expenses increased by $2.8 million, or 35.8%, in the six months ended June 30, 2018 as compared to the six months ended June 30, 2017, primarily due to:

· an increase in personnel-related costs of $1.9 million related to (i) higher headcount in the legal, finance, human resources, and information technology department, functions required of a fast-growing public company and (ii) changes in management compensation and increased expenses related to equity-based compensation, resulting from the impact of the increase in our stock price affecting the fair value of any share award;

· expenses related to external consultants and sub-contractors expenses increased by $1.0 million, partially due to legal proceedings initiated by us during the second quarter of 2018;

· expenses related to other overhead costs which increased by $0.4 million; and

· expenses related to depriciation and travel which increased by $0.4 million.

These increases were offset by costs related to doubtful debts which decreased by $0.9 million.

Financial Income (Expenses), Net

	Six Months Ended June 30,					Six Months Ended June 30, 2017 to 2018
	2018			2017		Change
	(In thousands)
Financial income (expenses), net	$	(1,896	)	$	5,005	$	(6,901	)	N/A

Financial expenses were $1.9 million in the six months ended June 30, 2018 compared to financial income of $5.0 million in the six months ended June 30, 2017, primarily due:

· an increase of $7.8 million in foreign exchange fluctuations between the Euro and the New Israeli Shekel against the U.S. Dollar;

· an increase of $1.0 million in interest expenses related to advance payments received for performance obligations that extend for a period greater than one year, as part of the new revenue recognition standard adoption; and

· an increase of $0.2 million in other financial expenses and bank charges .

The increase in these expenses was offset by:

· a decrease of $1.3 million in costs related to hedging transactions; and

· an increase of $0.8 million in interest income and accretion (amortization) of discount (premium) on marketable securities.

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Taxes on Income (Tax Benefit)

	Six Months Ended June 30,					Six Months Ended June 30, 2017 to 2018
	2018		2017			Change
	(In thousands)
Taxes on income (tax benefit)	$	9,279	$	(575	)	$	9,854	N/A

Taxes on income were $9.3 million in the six months ended June 30, 2018 compared to tax benefits of $0.6 million in the six months ended June 30, 2017, primarily due to:

· an increase of $5.2 million in current tax expenses in Israel triggered by the termination of the two year tax exemption in Israel which ends in 2018;

· a provision of $4.0 million for Global Intangible Low Taxed Income (“GILTI”) and an adjustment of $0.8 million related to transition tax on the mandatory deemed repatriation of cumulative foreign earnings under the U.S. Tax Cuts and Jobs Act of 2017;

· an increase of $0.3 million in current tax expenses in other jurisdictions; and

· a tax income related to the previous year’s tax credit of $0.5 million which was recorded in the six months ended June 30, 2017.

The increase in these expenses was offset by an increase of $0.9 million in deferred tax assets, net (presented as tax benefit).

Net Income

	Six Months Ended June 30,				Six Months Ended June 30, 2017 to 2018
	2018		2017		Change
	(In thousands)
Net income	$	70,254	$	36,699	$	33,555	91.4	%

As a result of the factors discussed above, net income increased by $33.6 million, or 91.4% in the six months ended June 30, 2018 as compared to the six months ended June 30, 2017.

14

Liquidity and Capital Resources

The following table shows our cash flow from operating activities, investing activities, and financing activities for the stated periods:

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
	(In thousands)
Net cash provided by operating activities	$	43,891		$	31,563		$	107,870		$	57,163
Net cash used in investing activities		(61,688	)		(39,766	)		(63,949	)		(50,043	)
Net cash provided by financing activities		2,986			1,752			7,591			2,123
Increase (decrease) in cash, cash equivalents and restricted cash	$	(14,811	)	$	(6,451	)	$	51,512		$	9,243

As of June 30, 2018, our cash, cash equivalents and restricted cash were $216.6 million. This amount does not include $221.0 million invested in available-for-sale marketable securities. We believe that cash provided by operating activities as well as our cash and cash equivalents will be sufficient to meet our anticipated cash needs for at least the next 12 months.

Operating Activities

For the six months ended June 30, 2018, cash provided by operating activities was $107.9 million, derived mainly from a net income of $70.3 million that included $17.1 million of non-cash expenses, an increase of $18.5 million in warranty obligations, $18.2 million in trade payables, net and other accounts payable, $13.1 million of deferred revenues and $1.0 million in accruals for employees, which were offset by an increase of $19.0 million in inventories,  $9.2 million in trade receivables, net, and and $2.1 million in prepaid expenses and other receivables.

For the six months ended June 30, 2017, cash provided by operating activities was $57.2 million, derived mainly from a net income of $36.7 million, $9.5 million of non-cash expenses, a decrease of $11.2 million in inventories and an increase of $7.0 million in warranty obligations, $6.9 million of deferred revenues, $5.8 million in trade payables, net and other accounts payable and $1.2 million in accruals for employees. The cash from operating activities was offset by an increase of $12.7 million in prepaid expenses and other receivables and $8.4 million in trade receivables, net.

 Investing Activities

During the six months ended June 30, 2018, net cash used in investing activities was $64.0 million, of which $89.4 million was invested in available-for-sale marketable securities and $21.4 million related to capital investments in laboratory equipment, end of line testing equipment,automated assembly lines, manufacturing tools and leasehold improvements. This was offset by $46.8 million from the maturities of available-for-sale marketable securities.

During the six months ended June 30, 2017, net cash used in investing activities was $50.0 million, of which $74.1 million was invested in available-for-sale marketable securities and $7.6 million related to capital investments in laboratory equipment, end of line testing equipment,automated assembly lines, manufacturing tools and leasehold improvements. This was offset by $31.7 million from the maturities of available-for-sale marketable securities.

Financing Activities

For the six months ended June 30, 2018, net cash provided by financing activities was $7.6 million, all attributed to cash received from the exercise of employee and non-employee stock options.

15

For the six months ended June 30, 2017, net cash provided by financing activities was $2.1 million, all attributed to cash received from the exercise of employee and non-employee stock options.

Debt Obligations

We do not have any outstanding indebtedness.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements.

ITEM 3          QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to market risk in the ordinary course of our business. Market risk represents the risk of loss that may impact our financial position due to adverse changes in financial market prices and rates. Our market risk exposure is primarily a result of fluctuations in foreign currency exchange rates, customer concentrations, and interest rates. We do not hold or issue financial instruments for trading purposes.

Foreign Currency Exchange Risk

Approximately 40.8% and 36.8% of our revenues for the six months ended June 30, 2018 and 2017, respectively, were earned in non‑U.S. Dollar denominated currencies, principally the Euro. Our expenses are generally denominated in the currencies in which our operations are located, primarily the U.S. Dollar and New Israeli Shekel, and to a lesser extent, the Euro. Our New Israeli Shekel‑denominated expenses consist primarily of personnel and overhead costs. Our consolidated results of operations and cash flows are, therefore, subject to fluctuations due to changes in foreign currency exchange rates and may be adversely affected in the future due to changes in foreign exchange rates. A hypothetical 10% change in foreign currency exchange rates during the six months ended June 30, 2018, between the Euro and the U.S. Dollar would increase or decrease our net income by $11.9 million for the six months ended June 30, 2018. A hypothetical 10% change in foreign currency exchange rates during the six months ended June 30, 2018, between the New Israeli Shekel and the U.S. Dollar would increase or decrease our net income by $4.6 million for the six months ended June 30, 2018.

For purposes of our consolidated financial statements, local currency assets and liabilities are translated at the rate of exchange to the U.S. Dollar on the balance sheet date and local currency revenues and expenses are translated at the exchange rate as of the date of the transaction or at the average exchange rate to the U.S. Dollar during the reporting period.

To date, we have used derivative financial instruments, specifically foreign currency forward contracts and put and call options, to manage exposure to foreign currency risks by hedging a portion of our account receivable balances denominated in Euros expected to be paid within nine months. Our foreign currency forward contracts are expected to mitigate exchange rate changes related to the hedged assets.

On June 30, 2018, we had cash, cash equivalents and restricted cash of $216.6 million and available-for-sale marketable securities with an estimated fair value of $221.0 million, which securities were held for working capital purposes. We do not enter into investments for trading or speculative purposes. Since most of our cash and cash equivalents are held in U.S. Dollar‑denominated money market funds, we believe that our cash and cash equivalents do not have any material exposure to changes in exchange rates.

Concentrations of Major Customers

Our trade accounts receivables potentially expose us to a concentration of credit risk with our major customers. As of June 30, 2018, one major customers accounted for approximately 18.3% of our consolidated trade receivables balance. We currently do not foresee a credit risk associated with these receivables.

16

ITEM 4          CONTROLS AND PROCEDURES

Disclosure Controls and Procedures

Our management, with the participation of our chief executive officer and chief financial officer, evaluated the effectiveness of our disclosure controls and procedures pursuant to Rule 13a-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), as of the end of the period covered by this report. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource constraints and that management is required to apply its judgment in evaluating the benefits of possible controls and procedures relative to their costs.

Based on that evaluation, our chief executive officer and chief financial officer concluded that our disclosure controls and procedures were effective and operating to provide reasonable assurance that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and to provide reasonable assurance that such information is accumulated and communicated to our management, including our chief executive officer and chief financial officer, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting

Following adoption of the new revenue recognition guidance on January 1, 2018, we implemented changes to our processes related to revenue recognition and the related control activities. There were no significant changes to our internal control over financial reporting due to the adoption of this new standard.

Based on an evaluation by our chief executive officer and chief financial officer, such officers concluded that there have been no changes in our internal control over financial reporting (as defined in Rule 13a-15(f) of the Exchange Act) that occurred during our most recent fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II. OTHER INFORMATION

ITEM 1          LEGAL PROCEEDINGS

In June 2018, we filed a lawsuit for patent infringement against Huawei Technologies Co., Ltd., a Chinese entity, Huawei Technologies Düsseldorf GmbH, a German entity, and WATTKRAFT Solar GmbH, a German distributor for Huawei. The lawsuit, filed in the Regional Court of Mannheim in Germany, asserts unauthorized use of patented technology, and is intended to protect SolarEdge’s significant investment in its innovative DC optimized inverter technology. Seeking monetary damages, an injunction, and recall of infringing Huawei inverters from the German market, the lawsuit is intended to prevent the defendants from selling any multi-level inverters infringing upon SolarEdge’s PV inverter technology protected in the asserted patent in Germany. In July 2018, we announced the extension of this lawsuit to two additional SolarEdge patents covering its power optimizer technology.

In June 2018 we were served with a complaint from a trustee of a former customer that filed for bankruptcy in the US.  The lawsuit seeks to recover approximately $2.5 million based on theories of preferential and fraudulent transfers. We believe that we have valid defenses to the claims asserted in the complaint and we do not expect the outcome of the litigation matters to have a material adverse effect on our Balance Sheets, Statements of Income or Cash Flows.

In addition, as part of the normal course of business, we may from time to time be named as a party to various legal claims, actions and complaints (including as a result of initiating such legal claims, action or complaints on behalf of the Company). It is impossible to predict with certainty whether any resulting liability from any such legal claims, actions or complaints would have a material adverse effect on our financial position, results of operations or cash flows.

17

ITEM 1A       RISK FACTORS

There have been no material changes to the risk factors as described in Part I, Item 1A, "Risk Factors," in our Annual Report on Form 10-K for the year ended December 31, 2017 other than the supplemental risk factor disclosed in our Form 10-Q for the quarter ended March 30, 2018 and the risk factors added below.

Changes in the U.S. trade environment, including the recent imposition of import tariffs, could adversely affect the amount or timing of our revenues, results of operations or cash flows.

The U.S. government recently proposed new or higher tariffs on specified imported products originating from China in response to what it characterizes as unfair trade practices, and China has responded by proposing new or higher tariffs on specified products imported from the United States.  In January 2018, a tariff on imported solar modules and cells was adopted in the United States. The tariff, which tariff does not apply directly to our products, except possibly with respect to power optimizers that are embedded onto solar panels in China, was initially set at 30%, with a gradual reduction over four years to 15%.  In addition, in July 2018, a 10% tariff on a long list of products imported from China, including inverters and power optimizers was adopted in the United States under Section 301 under the Trade Act of 1974 and is scheduled to go into effect October 1, 2018.  We cannot assure you as to whether additional tariffs will be imposed in the future.

 Tariffs on components that we import from China or other nations that have imposed, or may in the future impose, tariffs will cause our expenses to increase, which will adversely affect our profitability unless we are able to exclude our products from the tariffs or we raise prices for our products, which may result in our products becoming less attractive relative to products offered by our competitors. These tariffs and the possibility of additional tariffs in the future have created uncertainty in the industry concerning whether they will cause a material increase in the price of solar systems in the United States. If the price of solar systems in the United States increases, the use of solar would become less economically feasible and would likely reduce the number of solar systems manufactured and sold, which in turn may decrease demand for our products. Such outcomes could adversely affect the amount or timing of our revenues, of operations or cash flows, and continuing uncertainty could cause sales volatility, price fluctuations or supply shortages or cause our customers to advance or delay their purchase of our products.

We may not succeed in our strategy of pursuing or integrating selective acquisitions.

Part of our business strategy includes acquiring and integrating complementary businesses.  However, we may not be able to locate or acquire suitable acquisition candidates consistent with this strategy.  Negotiating or completing any such planned acquisitions may be complex, time consuming and expensive.  In addition, if an acquisition is consummated, the integration of the acquired businesses, products or other assets into our company may be complex and time-consuming and, if such acquisitions are not successfully integrated, we may not achieve anticipated benefits, cost-savings or growth opportunities.  These acquisitions and other arrangements also may fail to further our business strategy as anticipated, expose us to increased challenges with respect to our products or geographic markets, or expose us to additional liabilities associated with an acquired business.  Any one of these challenges or risks could impair our ability to realize the anticipated benefits from such acquisitions after we have expended resources on them.

ITEM 2         Unregistered Sales of Equity Securities and Use of Proceeds

None.

ITEM 3          DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4          MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5          OTHER INFORMATION

None.

18

ITEM 6          EXHIBITS

Exhibit No.	Description	Incorporation by Reference (where a report is indicated below, that document has been previously filed with the SEC and the applicable exhibit is incorporated by reference thereto)
31.1	Certification of Chief Executive Officer Pursuant to Rule 13a-14(a).	Filed with this report.
31.2	Certification of Chief Financial Officer Pursuant to Rule 13a-14(a).	Filed with this report.
32.1	Certification of Chief Executive Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Filed with this report.
32.2	Certification of Chief Financial Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Filed with this report.
101.INS	XBRL Instance Document	Filed with this report.
101.SCH	XBRL Taxonomy Extension Schema Document	Filed with this report.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document	Filed with this report.
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document	Filed with this report.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document	Filed with this report.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document	Filed with this report.

19

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Date: August 3, 2018	SOLAREDGE TECHNOLOGIES, INC. /s/ Guy Sella
	Guy Sella Chief Executive Officer and Chairman of the Board (Principal Executive Officer)
Date: August 3, 2018	/s/ Ronen Faier
	Ronen Faier Chief Financial Officer (Principal Financial and Accounting Officer)

20

EX-31.1

Exhibit 31.1

I, Guy Sella, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of SolarEdge Technologies, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 3, 2018

/s/ Guy Sella

Guy Sella

Chief Executive Officer and Chairman of the Board

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

I, Ronen Faier, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of SolarEdge Technologies, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 3, 2018

/s/ Ronen Faier

Ronen Faier

Chief Financial Officer

(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Guy Sella, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report on Form 10-Q of SolarEdge Technologies, Inc. for the quarterly period ended June 30, 2018 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that the information contained in such Quarterly Report on Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of SolarEdge Technologies, Inc.

August 3, 2018

/s/ Guy Sella

Guy Sella

Chief Executive Officer and Chairman of the Board

(Principal Executive Officer)

EX-32.2

Exhibit 32.2

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Ronen Faier, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report on Form 10-Q of SolarEdge Technologies, Inc. for the quarterly period ended June 30, 2018 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that the information contained in such Quarterly Report on Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of SolarEdge Technologies, Inc.

August 3, 2018

/s/ Ronen Faier

Ronen Faier

Chief Financial Officer

(Principal Financial Officer) 

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Jul. 27, 2018
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Entity Registrant Name	SolarEdge Technologies Inc
Entity Central Index Key	0001419612
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		45,498,414

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 214,540	$ 163,163
Restricted cash	2,049	1,516
Marketable securities	134,821	77,264
Trade receivables, net	118,103	109,528
Prepaid expenses and other accounts receivable	44,520	42,223
Inventories	102,014	82,992
Total current assets	616,047	476,686
LONG-TERM ASSETS:
Marketable securities	86,144	103,120
Property, equipment and intangible assets, net	68,532	52,297
Prepaid expenses and lease deposits	956	862
Deferred tax assets, net	11,551	8,340
Total long term assets	167,183	164,619
Total assets	783,230	641,305
CURRENT LIABILITIES:
Trade payables, net	81,610	69,488
Employees and payroll accruals	23,510	22,544
Warranty obligations	18,964	14,785
Deferred revenues	3,407	2,559
Accrued expenses and other accounts payable	26,480	20,378
Total current liabilities	153,971	129,754
LONG-TERM LIABILITIES:
Warranty obligations	78,327	64,026
Deferred revenues	47,595	31,453
Lease incentive obligation	1,616	1,765
Non-current tax liabilities	16,830	16,840
Total long-term liabilities	144,368	114,084
COMMITMENTS AND CONTINGENT LIABILITIES
STOCKHOLDERS' EQUITY:
Common stock of $0.0001 par value - Authorized: 125,000,000 shares as of June 30, 2018 (unaudited) and December 31, 2017; issued and outstanding: 45,498,414 and 43,812,601 shares as of June 30, 2018 (unaudited) and December 31, 2017, respectively	5	4
Additional paid-in capital	353,470	331,902
Accumulated other comprehensive loss	(1,138)	(611)
Retained earnings	132,554	66,172
Total stockholders' equity	484,891	397,467
Total liabilities and stockholders' equity	$ 783,230	$ 641,305

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, authorized shares	125,000,000	125,000,000
Common stock, issued shares	45,498,414	43,812,601
Common stock, outstanding shares	45,498,414	43,812,601

XML

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Revenues	$ 227,118	$ 136,099	$ 436,989	$ 251,153
Cost of revenues	145,172	89,033	275,446	165,411
Gross profit	81,946	47,066	161,543	85,742
Operating expenses:
Research and development	19,551	12,725	37,426	24,183
Sales and marketing	15,954	11,961	32,159	22,736
General and administrative	5,776	3,265	10,465	7,704
Total operating expenses	41,281	27,951	80,050	54,623
Operating income	40,665	19,115	81,493	31,119
Financial income (expenses), net	(2,480)	3,595	(1,896)	5,005
Other expenses			64
Income before taxes on income	38,185	22,710	79,533	36,124
Taxes on income (tax benefit)	3,617	186	9,279	(575)
Net income	$ 34,568	$ 22,524	$ 70,254	$ 36,699
Net basic earnings per share of common stock	$ 0.76	$ 0.54	$ 1.57	$ 0.88
Net diluted earnings per share of common stock	$ 0.72	$ 0.50	$ 1.46	$ 0.83
Weighted average number of shares used in computing net basic earnings per share of common stock	45,216,253	41,700,399	44,726,382	41,525,285
Weighted average number of shares used in computing net diluted earnings per share of common stock	48,291,280	44,831,590	47,984,817	44,335,521

XML

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 34,568	$ 22,524	$ 70,254	$ 36,699
Other comprehensive income (loss):
Changes in unrealized gains (losses) net of tax expenses (benefit)	(6)	5	(516)	33
Net change	(6)	5	(516)	33
Cash flow hedges:
Changes in unrealized gains, net of tax expense		66		975
Reclassification adjustments for loses, net of tax expense included in net income		(599)		(994)
Net change		(533)		(19)
Foreign currency translation adjustments, net	3	186	(11)	(57)
Total other comprehensive loss	(3)	(342)	(527)	(43)
Comprehensive income	$ 34,565	$ 22,182	$ 69,727	$ 36,656

XML

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows provided by operating activities:
Net income	$ 70,254	$ 36,699
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, equipment and intangible assets	5,053	3,130
Amortization of premiums on available-for-sale marketable securities	1,014	791
Stock-based compensation	13,977	7,646
Deferred tax assets, net	(3,018)	(2,105)
Loss on disposals of fixed assets	64
Changes in assets and liabilities:
Inventories	(18,952)	11,153
Prepaid expenses and other accounts receivable	(2,135)	(12,675)
Trade receivables, net	(9,203)	(8,399)
Trade payables, net	12,143	2,007
Employees and payroll accruals	1,028	1,206
Warranty obligations	18,479	6,965
Deferred revenues	13,120	6,935
Accrued expenses and other accounts payable	6,194	3,958
Lease incentive obligation	(148)	(148)
Net cash provided by operating activities	107,870	57,163
Cash flows used in investing activities:
Purchase of property and equipment	(21,385)	(7,611)
Investment in available-for-sale marketable securities	(89,389)	(74,106)
Maturities of available-for-sale marketable securities	46,825	31,674
Net cash used in investing activities	(63,949)	(50,043)
Cash flows from financing activities:
Proceeds from issuance of shares under stock purchase plan and upon exercise of stock-based awards	7,591	2,123
Net cash provided by financing activities	7,591	2,123
Net increase in cash, cash equivalents and restricted cash	51,512	9,243
Cash, cash equivalents and restricted cash at the beginning of the period	164,679	105,580
Effect of exchange rate differences on cash, cash equivalents and restricted cash	398	(274)
Cash, cash equivalents and restricted cash at the end of the period	$ 216,589	$ 114,549

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GENERAL

6 Months Ended

Jun. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

GENERAL

NOTE 1:- GENERAL

a. SolarEdge Technologies, Inc. (the “Company”) and its subsidiaries design, develop, and sell an intelligent inverter solution designed to maximize power generation at the individual photovoltaic (“PV”) module level while lowering the cost of energy produced by the solar PV system and providing comprehensive and advanced safety features. The Company’s products consist mainly of (i) power optimizers designed to maximize energy throughput from each and every module through constant tracking of Maximum Power Point individually per module, (ii) inverters which invert direct current (DC) from the PV module to alternating current (AC) and (iii) a related cloud-based monitoring platform, that collects and processes information from the power optimizers and inverters of a solar PV system to enable customers and system owners as applicable, to monitor and manage the solar PV systems. In addition, the Company has a storage solution that is used to increase energy independence and maximize self-consumption for homeowners by utilizing a battery that is sold separately by third party manufacturers, to store and supply power as needed (the “StorEdge solution”). The StorEdge solution is designed to provide smart energy functions such as maximizing self-consumption, Time-of-Use programming for desired hours of the day, and home energy backup solutions.

The Company and its subsidiaries sell their products worldwide directly to large solar installers and engineering, procurement and construction firms (“EPCs”), as well as through large distributors and electrical equipment wholesalers to smaller solar installers.

b. New accounting pronouncements not yet effective:

In February 2016, the FASB issued Accounting Standards Update No. 2016-02 (Topic 842) "Leases." Topic 842 supersedes the lease requirements in Accounting Standards Codification (ASC) Topic 840, "Leases." Under Topic 842, lessees are required to recognize assets and liabilities on the balance sheet for most leases and provide enhanced disclosures. Leases will continue to be classified as either finance or operating. As currently issued, entities are required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. There are additional optional practical expedients that an entity may elect to apply. The Company is in the process of implementing changes to its systems and processes in conjunction with the review of lease agreements. The Company will adopt Topic 842 effective January 1, 2019 and expect to elect certain available transitional practical expedients.The Company is evaluating the potential impact of this pronouncement.

In January 2017, the FASB issued ASU 2017-04, "Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment". ASU 2017-04 was issued to simplify how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit’s goodwill with the carrying amount of that goodwill. The amendments in ASU 2017-04 are effective for fiscal years, and interim periods within those years, beginning after December 15, 2019.

The Company is evaluating the potential impact of this pronouncement.

In June 2018, the FASB issued ASU 2018-07, "Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting". ASU 2018-07 was issued to simplify several aspects of the accounting for nonemployee share-based payment transactions resulting from expanding the scope of Topic 718, Compensation - Stock Compensation, to include share-based payment transactions for acquiring goods and services from nonemployees. The amendments specify that Topic 718 applies to all share-based payment transactions in which a grantor acquires goods or services to be used or consumed in a grantor’s own operations by issuing share-based payment awards.

The Company will adopt the new standard effective July 1, 2018, and does not expect the adoption of this guidance to have a material impact on its consolidated financial statements.

c. Recently issued and adopted pronouncements:

In May 2014, the FASB issued Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). Under the new standard, revenue is recognized when a customer obtains control of promised goods or services and is recognized in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. In addition, the standard requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flow arising from contracts with customers. The guidance permits two methods of modification: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (the modified retrospective method).  The Company adopted the new standard, effective January 1, 2018, using the modified retrospective method applied to those contracts which were not substantially completed as of the adoption date. See “Revenue Recognition” below for further details.

In November 2016, the FASB issued Accounting Standards Update No. 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (ASU 2016-18), which requires companies to include amounts generally described as restricted cash and restricted cash equivalents in cash and cash equivalents when reconciling beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company adopted ASU 2016-18 during the first quarter of 2018. The adoption of this new guidance had no material impact on the Company’s condensed consolidated balance sheets, statements of income and cash flows.

Revenue Recognition:

The Company adopted Accounting Standards Codification 606, Revenue from Contracts with Customers (ASC 606), effective on January 1, 2018. As a result of this adoption, the Company revised its accounting policy for revenue recognition as detailed below.

The Company and its subsidiaries generate their revenues mainly from the sale of power optimizers, inverters and cloud-based monitoring services to distributors, installers and PV module manufacturers.

The Company recognizes revenue under the core principle that transfer of control to the Company’s customers should be depicted in an amount reflecting the consideration the Company expects to receive in revenue. In order to achieve that core principle, the Company applies the following five-step approach: (1) identify the contract with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when a performance obligation is satisfied.

(1) Identify the contract with a customer

A contract is an agreement between two or more parties that creates enforceable rights and obligations. In evaluating the contract, the Company analyzes the customer’s intent and ability to pay the amount of promised consideration (credit risk) and considers the probability of collecting substantially all of the consideration.

The Company determines whether collectability is reasonably assured on a customer-by-customer basis pursuant to its credit review policy. The Company typically sells to customers with whom it has a long-term business relationship and a history of successful collection. For a new customer, or when an existing customer substantiallyexpands its commitments, the Company evaluates the customer’s financial position, the number of years the customer has been in business, the history of collection with the customer, and the Customer’s ability to pay, and typically assigns a credit limit based on that review.

(2) Identify the performance obligations in the contract

At a contract’s inception, the Company assesses the goods or services promised in a contract with a customer and identifies the performance obligations.

The main performance obligations are the provisions of the following:

Power optimizers; Inverters; Storage solution; Cloud based monitoring services; Extended warranty services and Communication services.

(3) Determine the transaction price

The transaction price is the amount of consideration to which the Company is entitled in exchange for transferring promised goods or services to a customer, excluding amounts collected on behalf of third parties.

Generally, the Company does not provide price protection, stock rotation, and/or right of return. The Company determines the transaction price for all satisfied and unsatisfied performance obligations identified in the contract from contract inception to the beginning of the earliest period presented.

Rebates or discounts on goods or services are accounted for as variable consideration. The rebate or discount program is applied retrospectively for future purchases. Provisions for rebates, sales incentives, and discounts to customers are accounted for as reductions in revenue in the same period the related sales are recorded.

When a contract provides a customer with payment terms of more than a year, the Company considers whether those terms create variability in the transaction price and whether a significant financing component exists.

The performance obligations that extend for a period greater than one year are those that include a financial component: (i) warranty extension services, (ii) cloud-based monitoring, and (iii) communication services.

(4) Allocate the transaction price to the performance obligations in the contract

The Company performs an allocation of the transaction price to each separate performance obligation, in proportion to their relative standalone selling prices.

(5) Recognize revenue when a performance obligation is satisfied

Revenue is recognized when or as performance obligations are satisfied by transferring control of a promised good or service to a customer. Control either transfers over time or at a point in time, which affects when revenue is recorded.

Revenues from sales of products are recognized when control is transferred (based on the agreed International Commercial terms, or “INCOTERMS”). Revenues related to warranty extension services, cloud-based monitoring, and communication services are recognized over time on a straight-line basis.

Deferred revenues consist of deferred cloud-based monitoring services, communication services, warranty extension services and advance payments received from customers for the Company’s products. Deferred revenues are classified as short-term and long-term deferred revenues based on the period in which revenues are expected to be recognized.

The most significant impact of the standard on the Company’s financial statements relates to advance payments received for performance obligations that extend for a period greater than one year. Applying the new standard, such performance obligations are those that include a financing component, specifically: (i) warranty extension services, (ii) cloud-based monitoring, and (iii) communication services.

The Company recognizes financing component expenses in its condensed consolidated statement of income in relation to advance payments for performance obligations that extend for a period greater than one year. These financing component expenses are reflected in the Company’s deferred revenues balance.

The effect of the changes made to the consolidated January 1, 2018 balance sheets following the adoption of ASC 606, Revenue - Revenue from Contracts with Customers were as follows:

	Balance as of December 31, 2017		Adjustments due following adoption of ASC 606			Balance as of January 1, 2018
			Unaudited			Unaudited
Deferred Revenues - Current term	$	2,559	$	(89	)	$	2,470
Deferred Revenues -  Long term		31,453		3,961			35,414
Retained earnings	$	66,172	$	(3,872	)	$	62,300

In accordance with the new revenue standard requirements, the disclosure of the impact of adoption on the Company’s condensed consolidated statements of income, cash flows, and balance sheets were as follows:

	Three months ended June 30, 2018 (Unaudited)
	As Reported			Balances before adoption of ASC 606			Effect of change
Statements of operations
Revenues	$	227,118		$	227,067		$	51
Financial income (expenses), net		(2,480	)		(1,913	)		(567	)
Net income		34,568			35,084			(516	)
Cash flows
Net income		34,568			35,084			(516	)
Changes in assets and liabilities:
Deferred revenues		6,139			5,623			516

	Six months ended June 30, 2018 (Unaudited)
	As Reported			Balances before adoption of ASC 606			Effect of change
Statements of operations
Revenues	$	436,989		$	436,938		$	51
Financial income (expenses), net		(1,896	)		(817	)		(1,079	)
Net income		70,254			71,282			(1,028	)
Cash flows
Net income		70,254			71,282			(1,028	)
Changes in assets and liabilities:
Deferred revenues		13,120			12,092			1,028
Balance Sheets
Deferred Revenues - Current		(3,407	)		(3,413	)		6
Deferred Revenues -  Long term		(47,595	)		(42,689	)		(4,906	)
Retained earnings	$	(132,554	)	$	(136,426	)	$	3,872

d. Basis of Presentation:

The accompanying unaudited condensed consolidated interim financial statements have been prepared in accordance with Article 10 of Regulation S-X, “Interim Financial Statements” and the rules and regulations for Form 10-Q of the Securities and Exchange Commission (the “SEC”). Pursuant to those rules and regulations, the Company has condensed or omitted certain information and disclosures in footnotes that it normally includes in its annual consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”).

In management’s opinion, the Company has made all adjustments (consisting only of normal, recurring adjustments, except as otherwise indicated) necessary to fairly present its condensed consolidated financial position, results of operations, and cash flows. The Company’s interim period operating results do not necessarily indicate the results that may be expected for any other interim period or for the full fiscal year.

The significant accounting policies applied in the annual consolidated financial statements of the Company as of December 31, 2017, contained in the Company’s Annual Report on Form 10-K filed with the SEC on February 20, 2018, have been applied consistently in these unaudited interim condensed consolidated financial statements, except for the adoption of ASC 606, Revenue - Revenue from Contracts with Customers (see Note 1c).

e. The Company depends on three contract manufacturers and several limited or single source component suppliers. Reliance on these vendors makes the Company vulnerable to possible capacity constraints and reduced control over component availability, delivery schedules, manufacturing yields, and costs.

These vendors collectively accounted for 58.3% and 51.6% of the Company’s total trade payables as of June 30, 2018 (unaudited) and December 31, 2017, respectively.

The Company has the right to offset its payables to one of its contract manufacturers against vendor non-trade receivables. As of June 30, 2018 (unaudited), a total of $2,574 of these receivables met the criteria for net recognition and were offset against the corresponding accounts payable balances for this contract manufacturer in the accompanying condensed Consolidated Balance Sheets.

f. Derivative financial instruments:

To protect against the increase in value of forecasted foreign currency cash flows resulting from salary and lease payments of its Israeli facilities denominated in the Israeli currency, the New Israeli Shekels (“NIS”), the Company instituted a foreign currency cash flow hedging program. The Company hedged portions of the anticipated payroll and lease payments denominated in NIS for a period of one to twelve months with hedging contracts. Accordingly, when the dollar strengthens against the foreign currencies, the decline in present value of future foreign currency expenses is offset by losses in the fair value of the hedging contracts. Conversely, when the dollar weakens, the increase in the present value of future foreign currency cash flows is offset by gains in the fair value of the hedging contracts. These hedging contracts are designated as cash flow hedges, as defined by ASC 815 and are all effective hedges.

In addition to the above-mentioned cash flow hedges transactions, the Company also entered into derivative instrument arrangements to hedge the Company’s exposure to currencies other than the U.S. dollar. These derivative instruments are not designated as cash flow hedges, as defined by ASC 815, and therefore all gains and losses, resulting from fair value remeasurement, were recorded immediately in the statement of operations, as financial income (expenses).

As of June 30, 2018 (unaudited), the Company entered into forward contracts and put and call options to sell Euros for U.S. dollars in the amount of €22.5 million. These hedging contracts do not contain any credit-risk-related contingency features. See Note 4 for information on the fair value of these hedging contracts.

As of June 30, 2018 (unaudited), the Company had no derivative instruments that were designated as cash flow hedges

The fair value of the Company’s outstanding derivative instruments is as follows:

	Balance as of June 30,			Balance as of December 31,
	2018			2017
	(unaudited)
Derivative assets:
Derivatives not designated as cash flow hedging instruments:
Foreign exchange option contracts	$	340		$	221
Foreign exchange forward contracts		312			-
Total	$	652		$	221
Derivative liabilities:
Derivatives not designated as cash flow hedging instruments:
Foreign exchange option contracts	$	(24	)	$	(285	)
Foreign exchange forward contracts		-			(116	)
Total	$	(24	)	$	(401	)

The Company recorded the fair value of derivative assets and liabilities, net in “prepaid expenses and other accounts receivable” and in “Accrued expenses and other accounts payable” on the Company’s consolidated balance sheets as of June 30, 2018 and December 31, 2017, respectively.

The net increase in unrealized gains recognized in “accumulated other comprehensive loss” on derivatives, net of tax effect, is as follows:

	Three months ended				Six months ended
	June 30,				June 30,
	2018		2017		2018		2017
	(unaudited)				(unaudited)
Derivatives designated as cash flow hedging instruments:
Foreign exchange forward contracts		-	$	66		-	$	975

The net gains reclassified from “accumulated other comprehensive loss” into income, are as follows:

	Three months ended					Six months ended
	June 30,					June 30,
	2018		2017			2018		2017
	(unaudited)					(unaudited)
Derivatives designated as cash flow hedging instruments:
Foreign exchange forward contracts		-	$	(599	)		-	$	(994	)

The Company recorded in the financial income (expenses), net, a net loss (gain) related to derivatives not qualified as hedging instruments of $2,042 and $(672) during the three months ended June 30, 2018 and 2017 (unaudited), respectively and $625 and $(672) during the six months ended June 30, 2018 and 2017 (unaudited), respectively.

g. Accumulated other comprehensive income:

The following table summarizes the changes in accumulated balances of other comprehensive income (loss), net of taxes, for the three months ended June 30, 2018 (unaudited):

	Unrealized gains (losses) on available-for-sale marketable securities			Unrealized gains (losses) on foreign currency translation			Total
Beginning balance	$	(943	)	$	(192	)	$	(1,135	)
Net other comprehensive income (loss) before reclassifications		(6	)		3			(3	)
Net current period other comprehensive income (loss)		(6	)		3			(3	)
Ending balance	$	(949	)	$	(189	)	$	(1,138	)

The following table summarizes the changes in accumulated balances of other comprehensive income (loss), net of taxes, for the six months ended June 30, 2018 (unaudited):

	Unrealized losses on available-for-sale marketable securities			Unrealized losses on foreign currency translation			Total
Beginning balance	$	(433	)	$	(178	)	$	(611	)
Net other comprehensive loss before reclassifications		(516	)		(11	)		(527	)
Net current period other comprehensive loss		(516	)		(11	)		(527	)
Ending balance	$	(949	)	$	(189	)	$	(1,138	)

The following table summarizes the changes in accumulated balances of other comprehensive income (loss), net of taxes, for the three months ended June 30, 2017 (unaudited):

	Unrealized gains (losses) on available-for-sale marketable securities			Unrealized gains (losses) on cash flow hedges			Unrealized gains (losses) on foreign currency translation			Total
Beginning balance	$	(108	)	$	533		$	(450	)	$	(25	)
Net other comprehensive income before reclassifications		5			66			186			257
Net gains reclassified from accumulated other comprehensive loss		-			(599	)		-			(599	)
Net current period other comprehensive income (loss)		5			(533	)		186			(342	)
Ending balance	$	(103	)	$	-		$	(264	)	$	(367	)

The following table summarizes the changes in accumulated balances of other comprehensive income (loss), net of taxes, for the six months ended June 30, 2017 (unaudited):

	Unrealized gains (losses) on available-for-sale marketable securities			Unrealized gains (losses) on cash flow hedges			Unrealized gains (losses) on foreign currency translation			Total
Beginning balance	$	(136	)	$	19		$	(207	)	$	324
Net other comprehensive income (loss) before reclassifications		33			975			(57	)		951
Net gains reclassified from accumulated other comprehensive income (loss)		-			(994	)		-			(994	)
Net current period other comprehensive income (loss)		33			(19	)		(57	)		(43	)
Ending balance	$	(103	)	$	-		$	(264	)	$	(367	)

Thefollowing table provides details about reclassifications out of accumulated other comprehensive income (loss) (unaudited):

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss					Affected Line Item in the Statements of Income
	Three months ended June 30,
	2018		2017
Unrealized gains on cash flow hedges, net	$	-	$	108		Cost of revenues
		-		363		Research and development
		-		92		Sales and marketing
		-		82		General and administrative
		-		645		Total, before income taxes
		-		(46	)	Income tax expense (benefit)
	$	-	$	599		Total, net of income taxes

Thefollowing table provides details about reclassifications out of accumulated other comprehensive income (loss) (unaudited):

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss					Affected Line Item in the Statements of Income
	Six months ended June 30,
	2018		2017
Unrealized gains on cash flow hedges, net	$	-	$	166		Cost of revenues
		-		570		Research and development
		-		151		Sales and marketing
		-		153		General and administrative
		-		1,040		Total, before income taxes
		-		(46	)	Income tax expense (benefit)
	$	-	$	994		Total, net of income taxes

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INVENTORIES

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

INVENTORIES

NOTE 2:- INVENTORIES

	June 30, 2018		December 31, 2017
	(unaudited)
Raw materials	$	28,842	$	25,887
Finished goods		73,172		57,105
	$	102,014	$	82,992

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WARRANTY OBLIGATIONS

6 Months Ended

Jun. 30, 2018

Product Warranties Disclosures [Abstract]

WARRANTY OBLIGATIONS

NOTE 3:- WARRANTY OBLIGATIONS

Changes in the Company’s product warranty liability for the six months ended June 30, 2018 and 2017 were as follows:

	Six months ended June 30,
	2018			2017
	(unaudited)
Balance, at beginning of period	$	78,811		$	58,375
Additions and adjustments to cost of revenues		27,546			12,976
Utilization and current warranty expenses		(9,066	)		(6,011	)
Balance, at end of period		97,291			65,340
Less current portion		(18,964	)		(12,501	)
Long term portion	$	78,327		$	52,839

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FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

NOTE 4:- FAIR VALUE MEASUREMENTS

The Company applies ASC 820 (“Fair Value Measurements and Disclosures”), with respect to fair value measurements of all financial assets and liabilities.

Fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or a liability.

A three-tiered fair value hierarchy is established as a basis for considering such assumptions and for inputs used in the valuation methodologies in measuring fair value:

Level 1- Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets.

Level 2- Include other inputs that are directly or indirectly observable in the marketplace.

Level 3- Unobservable inputs which are supported by little or no market activity.

The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

The following table sets forth the Company’s assets and liabilities that were measured at fair value as of June 30, 2018 (unaudited) by level within the fair value hierarchy:

	Balance as of		Fair value measurements
Description	June 30, 2018		Level 1		Level 2		Level 3
Cash equivalents:
Money market mutual funds	$	6,641	$	6,641		-		-
Derivative instruments assets, net	$	628		-	$	628		-
Short-term marketable securities:
Corporate bonds	$	128,847		-	$	128,847		-
Governmental bonds	$	5,974		-	$	5,974		-
Long-term marketable securities:
Corporate bonds	$	80,208		-	$	80,208		-
Governmental bonds	$	5,936		-	$	5,936		-

The following table sets forth the Company’s assets that were measured at fair value as of December 31, 2017 by level within the fair value hierarchy:

	Balance as of			Fair value measurements
Description	December 31, 2017			Level 1		Level 2			Level 3
Cash equivalents:
Money market mutual funds	$	6,163		$	6,163		-			-
Derivative instruments liability, net	$	(180	)		-	$	(180	)		-
Short-term marketable securities:
Corporate bonds	$	68,272			-	$	68,272			-
Governmental bonds	$	8,992			-	$	8,992			-
Long-term marketable securities:
Corporate bonds	$	95,160			-	$	95,160			-
Governmental bonds	$	7,960			-	$	7,960			-

In addition to the assets described above, the Company’s financial instruments also include cash and cash equivalents, restricted and short-term deposits, trade receivables, other accounts receivable, trade payables, accrued expenses and other payables. The fair value of these financial instruments was not materially different from their carrying values on June 30, 2018 due to the short-term maturity of these instruments.

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COMMITMENTS AND CONTINGENT LIABILITIES

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENT LIABILITIES

NOTE 5:- COMMITMENTS AND CONTINGENT LIABILITIES

a. Guarantees:

As of June 30, 2018 (unaudited), contingent liabilities exist regarding guarantees in the amount of $1,389, $55, $176 and $342 in respect of office rent lease agreements, customs transactions, credit card limits and securing projects with customers, respectively.

b. Contractual purchase obligations:

The Company has contractual obligations to purchase goods and raw materials. These contractual purchase obligations relate to inventories held by contract manufacturers and purchase orders initiated by the contract manufacturers and suppliers, which cannot be canceled without penalty. The Company utilizes third parties to manufacture its products. In addition, it acquires raw materials or other goods and services, including product components, by issuing to suppliers authorizations to purchase based on its projected demand and manufacturing needs.

As of June 30, 2018 (unaudited), the Company had non-cancelable purchase obligations totaling approximately $321,135 out of which the Company already recorded a provision for loss in the amount of $2,393.

As of June 30, 2018, the Company had contractual obligations for capital expenditures totaling approximately $35,810. These commitments reflect purchases of automated assembly lines and other machinery related to the Company’s manufacturing.

c. Legal claims:

From time to time, the Company may be involved in various claims and legal proceedings. The Company reviews the status of each matter and assesses its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and the amount can be reasonably estimated, the Company accrues a liability for the estimated loss. These accruals are reviewed at least quarterly and adjusted to reflect the impact of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular matter.

In June 2018, the Company was served with a complaint from a trustee of a former customer that filed for bankruptcy in the US. The lawsuit seeks to recover approximately $2,481 based on theories of preferential and fraudulent transfers. The company believes it has valid defenses to the claims in this lawsuit and does not expect the outcome of the litigation matters to have a material adverse effect on its Balance Sheets, Statements of Income or Cash Flows.

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STOCK CAPITAL

6 Months Ended

Jun. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

STOCK CAPITAL

NOTE 6:- STOCK CAPITAL

a. Common Stock:

	Authorized				Issued and outstanding
	Number of shares
	June 30, 2018		December 31, 2017		June 30, 2018		December 31, 2017
	(unaudited)				(unaudited)
Stock of $0.0001 par value:
Common stock		125,000,000		125,000,000		45,498,414		43,812,601

b. Stock Incentive plans:

The Company’s 2007 Global Incentive Plan (the “2007 Plan”) was adopted by the board of directors on August 30, 2007. On March 31, 2015, once the Company completed its Initial Public Offering (“IPO”), the 2007 Plan has been terminated and no further awards will be granted thereunder. All outstanding awards will continue to be governed by their existing terms and 379,358 available options for future grant were transferred to the Company’s 2015 Global Incentive Plan (the “2015 Plan”) and are reserved for future issuances under the 2015 plan.

The 2015 Plan became effective upon the consummation of the IPO. The 2015 Plan provides for the grant of options, RSUs and other share-based awards to directors, employees, officers and consultants of the Company and its Subsidiaries. As of June 30, 2018 (unaudited), a total of 8,080,717 (unaudited) shares of common stock were reserved for issuance under the 2015 Plan (the “Share Reserve”).

The Share Reserve will automatically increase on January 1st of each year during the term of the 2015 Plan commencing on January 1st of the year following the year in which the 2015 Plan becomes effective in an amount equal to five percent (5%) of the total number of shares of capital stock outstanding on December 31st of the preceding calendar year; provided, however, that our board of directors may provide that there will not be a January 1st increase in the Share Reserve in a given year or that the increase will be less than five percent (5%) of the shares of capital stock outstanding on the preceding December 31st.

The aggregate maximum number of shares of common stock that may be issued on the exercise of incentive stock options is ten million (10,000,000).

As of June 30, 2018 (unaudited), an aggregate of 3,611,297 shares of common stock are still available for future grant under the 2015 Plan.

c. Options granted to employees and members of the board of directors:

A summary of the activity in the share options granted to employees and members of the board of directors for the six months ended June 30, 2018 (unaudited) and related information follows:

						Weighted
						average
				Weighted		remaining
	Number			average		contractual		Aggregate
	of			exercise		term		intrinsic
	Options			price		in years		Value
Outstanding as of December 31, 2017		3,524,310			7.40		6.35		106,251
Granted		180,983			38.05
Exercised		(1,219,007	)		4.86
Forfeited or expired		(22,677	)		8.46
Outstanding as of June 30, 2018		2,463,609			10.90		6.68		91,022
Vested and expected to vest as of June 30, 2018		2,395,526			10.81		6.66		88,724
Exercisable as of June 30, 2018		1,564,382			7.12		5.93		63,722

The aggregate intrinsic value represents the total intrinsic value (the difference between the fair value of the Company’s common stock as of the last day of each period and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their options on the last day of each period. The total intrinsic value of options exercised during the six months ended on June 30, 2018 (unaudited) was $56,071.

The weighted average grant date fair values of options granted to employees and executive directors during the six months ended June 30, 2018 (unaudited) was $20.83.

d. A summary of the activity in the RSUs granted to employees and members of the board of directors for the six months ended June 30, 2018 (unaudited) is as follows:

	No. of RSUs			Weighted averagegrant date fair value
Unvested as of December 31, 2017		2,087,992			24.33
Granted		531,729			48.15
Vested		(393,939	)		21.16
Forfeited		(125,989	)		6.62
Unvested as of June 30, 2018		2,099,793			30.71

e.          Options and RSUs issued to non-employee consultants:

The Company has granted options and RSUs to purchase common shares to non-employee consultants as of June 30, 2018 (unaudited) as follows:

	Outstanding				Exercisable
	as of				as of
	June 30,		Exercise		June 30,		Exercisable
Issuance Date	2018		price		2018		Through
January 27, 2014		225		3.51		31	January 27, 2024
May 1, 2014		1,205		3.51		1,205	May 1, 2024
September 17, 2014		3,936		3.96		3,831	September 17, 2024
October 29, 2014		2,139		5.01		361	October 29, 2024
August 19, 2015		6,981		0.00		-	-
November 8, 2015		928		0.00		-	-
April 18, 2016		834		0.00		-	-
July 11, 2016		1,167		0.00		-	-
September 21, 2016		2,500		15.34		250	September 21, 2026
September 21, 2016		3,938		0.00		-	-
March 15, 2017		6,000		0.00		-	-
March 15, 2017		6,500		13.70		500	March 15, 2027
March 27, 2017		3,000		0.00		-	-
November 20, 2017		5,250		0.00		-	-
January 2, 2018		6,160		0.00		-	-
		50,763				6,178

The Company had accounted for its options and RSUs granted to non-employee consultants under the fair value method of ASC 505-50.

In connection with the grant of stock options and RSUs to non‑employee consultants, the Company recorded stock compensation expenses in the six months ended June 30, 2018 (unaudited) and 2017 (unaudited) in the amounts $835 and $294, respectively.

f. Employee Stock Purchase Plan (“ESPP”):

The Company adopted an Employee Stock Purchase Plan (the “ESPP”) effective upon the consummation of the IPO. As of June 30, 2018 (unaudited), a total of 1,739,280 shares were reserved for issuance under this plan. The number of shares of common stock reserved for issuance under the ESPP will increase automatically on January 1st of each year, for ten years, by the lesser of 1% of the total number of shares of the Company’s common stock outstanding on December 31st of the preceding calendar year or 487,643 shares. However, the Company’s board of directors may reduce the amount of the increase in any particular year at their discretion, including a reduction to zero.

The ESPP is implemented through an offering every six months. According to the ESPP, eligible employees may use up to 10% of their salaries to purchase common stock shares up to an aggregate limit of $10 per participant for every six months plan. The price of an ordinary share purchased under the ESPP is equal to 85% of the lower of the fair market value of the ordinary share on the subscription date of each offering period or on the purchase date.

As of June 30, 2018 (unaudited), 323,342 common stock shares had been purchased under the ESPP.

As of June 30, 2018 (unaudited), 1,415,938 common stock shares were available for future issuance under the ESPP.

In accordance with ASC No. 718, the ESPP is compensatory and as such results in recognition of compensation cost.

g. Stock-based compensation expense for employees and consultants:

The Company recognized stock-based compensation expenses related to stock options and RSUs granted to employees and non-employees and ESPP in the condensed consolidated statement of operations for the six months ended on June 30, 2018 (unaudited) and 2017 (unaudited), as follows:

	Three months ended June 30,				Six months ended June 30,
	2018		2017		2018		2017
Cost of revenues	$	968	$	517	$	1,892	$	1,010
Research and development		2,605		1,280		4,987		2,485
Selling and marketing		2,094		1,204		4,298		2,234
General and administrative		1,461		1,033		2,800		1,917
Total stock-based compensation expense	$	7,128	$	4,034	$	13,977	$	7,646

As of June 30, 2018 (unaudited), there was a total unrecognized compensation expense of $70,363 related to non‑vested equity‑based compensation arrangements granted under the Company’s Plans. These expenses are expected to be recognized during the period from July 1, 2018 through May 31, 2022.

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BASIC AND DILUTED NET EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

BASIC AND DILUTED NET EARNINGS PER SHARE

NOTE 7:- BASIC AND DILUTED NET EARNINGS PER SHARE

Basic net earnings per share is computed by dividing the net earnings by the weighted-average number of shares of common stock outstanding during the period.

No shares were excluded from the calculation of diluted net earnings per share due to their anti-dilutive effect for the three and six months ended June 30, 2018 (unaudited).

The total weighted average number of shares related to the outstanding stock options, excluded from the calculation of diluted net earnings per share due to their anti-dilutive effect was 199,950 and 395,032 for the three and six months ended June 30, 2017 (unaudited), respectively.

The following table presents the computation of basic and diluted net earnings per share for the periods presented (in thousands, except per share data):

	Three months ended June 30,				Six months ended June 30,
	2018		2017		2018		2017
	(unaudited)				(unaudited)
Numerator:
Net income	$	34,568	$	22,524	$	70,254	$	36,699
Denominator:
Shares used in computing net earnings per share of common stock, basic		45,216,253		41,700,399		44,726,382		41,525,285
Effect of stock-based awards		3,075,027		3,131,191		3,258,435		2,810,236
Shares used in computing net earnings per share of common stock,  diluted		48,291,280		44,831,590		47,984,817		44,335,521
Basic net income per share	$	0.76	$	0.54	$	1.57	$	0.88
Diluted net income per share	$	0.72	$	0.50	$	1.46	$	0.83

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INCOME TAXES

6 Months Ended

Jun. 30, 2018

Income Taxes

INCOME TAXES

NOTE 8:-        INCOME TAXES

a. Taxes on income (tax benefit) are comprised as follows:

	Three months ended June 30,						Six months ended June 30,
	2018			2017			2018			2017
	(unaudited)						(unaudited)
Current year taxes	$	5,314		$	959		$	12,297		$	2,028
Deferred tax income net, and others		(1,697	)		(773	)		(3,018	)		(2,603	)
Taxes on income (tax benefit)	$	3,617		$	186		$	9,279		$	(575	)

b. Deferred income taxes:

Deferred income taxes reflect the net tax effect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes.

Significant components of the Company’s deferred tax liabilities and assets are as follows:

	June 30,		December 31,
	2018		2017
	(Unaudited)
Net assets in respect of:
Research and Development carryforward expenses- temporary differences	$	7,229	$	5,380
Stock based compensation		2,093		1,622
Allowances, provisions and others		2,229		1,338
Net deferred tax assets	$	11,551	$	8,340

c. Uncertain tax positions:

As of June 30, 2018, the Company recognized a total liability for uncertain tax positions in an immaterial amount.

d. On December 22, 2017, the Tax Cuts and Jobs Act (the "TCJA") was signed into law making significant changes to U.S. income tax law. These changes include, but are not limited to, a corporate tax rate decrease from 35% to 21% effective for tax years beginning after December 31, 2017, the transition of U.S. international taxation from a worldwide tax system to a territorial system, and a one-time transition tax on the mandatory deemed repatriation of cumulative foreign earnings (the “E&P”) as of December 31, 2017.

During the fourth quarter of 2017, the Company calculated its best estimate of the impact of the TCJA in its year end income tax provision in accordance with its understanding of the TCJA and guidance available as of the date of this filing and as a result recorded $19.2 million as an additional income tax expense in the fourth quarter of 2017, the period in which the legislation was enacted.

The provisional amount related to the remeasurement of certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future was $0.5 million. The provisional amount related to the one-time transition tax on the mandatory deemed repatriation of foreign earnings was $18.7 million based on cumulative foreign earnings of $145 million. An additional provisional charge of $0.8 million was recorded in the first quarter of 2018 as a result of IRS guidance issued in January.

Additionally, the TCJA requires certain Global Intangible Low Taxed Income (“GILTI”) earned by controlled foreign corporations (“CFCs”) to be included in the gross income of the CFCs’ U.S. shareholder.  GAAP allows the Company to either: (i) treat taxes due on future U.S. inclusions in taxable income related to GILTI as a current-period expense when incurred (the “period cost method”); or (ii) factor such amounts into its measurement of deferred taxes (the “deferred method”).  Effective the first quarter of 2018, the Company elected to treat any potential GILTI inclusions as a period cost, as we are not projecting any material impact from GILTI inclusions and any deferred taxes related to any inclusion would be immaterial.

The Company has calculated its best estimate of the impact of the GILTI income tax provision in accordance with its understanding of the TCJA and guidance available as of the date of this filing, and as a result has recorded $3.9 million as an additional income tax expense for the six month ended June 30, 2018.

The final impact of the U.S. tax reform may differ, possibly materially, due to factors such as changes in interpretations and assumptions that the Company has made in its assessment, conclusion of the effects of the GILTI provisions, further refinement of the Company’s calculations, and additional guidance that may be issued by the U.S. government.

As these various factors are finalized, any change will be recorded as an adjustment to the provision for, or benefit from, income taxes in the period in which the amounts are determined, not to exceed 12 months from the date of enactment of the TCJA. The Company has not completed its assessment and the tax charge remains provisional as of June 30, 2018.

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CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS

6 Months Ended

Jun. 30, 2018

Risks and Uncertainties [Abstract]

CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS

NOTE 9:- CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS

a. For the three month period ended June 30, 2018 (unaudited) and 2017 (unaudited), the Company had one major customer that accounted for 16.25% and 13.31% of its consolidated revenues, respectively.

For the six month period ended June 30, 2018 (unaudited) and 2017 (unaudited), the Company had one major customer that accounted for 18.24% and 13.05% of its consolidated revenues, respectively.

b. As of June 30, 2018 (unaudited),one major customer accounted forapproximately 18.3% of the Company’s net accounts receivable and asof December31,2017, two major customers accounted for approximately 35.2% of the Company’s net accounts receivable.

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SUBSEQUENT EVENTS

6 Months Ended

Jun. 30, 2018

Subsequent Events [Abstract]

SUBSEQUENT EVENTS

NOTE 10:-     SUBSEQUENT EVENTS

On May 9, 2018, the Company signed an agreement for the purchase of substantially all of the assets and activities of Gamatronic Electronic Industries Ltd (“Gamatronic”), a company established in Israel, providing and manufacturing Uninterruptible Power Supplies (UPS) devices.

On July 1, 2018 the Company completed the acquisition of substantially all of the assets and activities of Gamatronic for approximately NIS 41 million (approximately USD 11.2 million), in cash. Asset purchase agreement also includes an earn-out provision of 50% and 33% of the business division’s net income for the first and second years following closing, respectively.  Company determined that such acquisition will be accounted as a business combination in accordance with ASC 805 "Business Combinations”. Currently, management assessing the acquisition consideration, purchase price allocation and the related accounting consequences of the acquisition, which, if any, will be reflected in the third quarter interim financial statement.

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GENERAL (Tables)

6 Months Ended

Jun. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Revenue from Contracts with Customers

The effect of the changes made to the consolidated January 1, 2018 balance sheets following the adoption of ASC 606, Revenue - Revenue from Contracts with Customers were as follows:

	Balance as of December 31, 2017		Adjustments due following adoption of ASC 606			Balance as of January 1, 2018
			Unaudited			Unaudited
Deferred Revenues - Current term	$	2,559	$	(89	)	$	2,470
Deferred Revenues -  Long term		31,453		3,961			35,414
Retained earnings	$	66,172	$	(3,872	)	$	62,300

Schedule of Impact of Adoption of Financial Statements

In accordance with the new revenue standard requirements, the disclosure of the impact of adoption on the Company’s condensed consolidated statements of income, cash flows, and balance sheets were as follows:

	Three months ended June 30, 2018 (Unaudited)
	As Reported			Balances before adoption of ASC 606			Effect of change
Statements of operations
Revenues	$	227,118		$	227,067		$	51
Financial income (expenses), net		(2,480	)		(1,913	)		(567	)
Net income		34,568			35,084			(516	)
Cash flows
Net income		34,568			35,084			(516	)
Changes in assets and liabilities:
Deferred revenues		6,139			5,623			516

	Six months ended June 30, 2018 (Unaudited)
	As Reported			Balances before adoption of ASC 606			Effect of change
Statements of operations
Revenues	$	436,989		$	436,938		$	51
Financial income (expenses), net		(1,896	)		(817	)		(1,079	)
Net income		70,254			71,282			(1,028	)
Cash flows
Net income		70,254			71,282			(1,028	)
Changes in assets and liabilities:
Deferred revenues		13,120			12,092			1,028
Balance Sheets
Deferred Revenues - Current		(3,407	)		(3,413	)		6
Deferred Revenues -  Long term		(47,595	)		(42,689	)		(4,906	)
Retained earnings	$	(132,554	)	$	(136,426	)	$	3,872

Schedule of Fair Value of Derivative Instruments

The fair value of the Company’s outstanding derivative instruments is as follows:

	Balance as of June 30,			Balance as of December 31,
	2018			2017
	(unaudited)
Derivative assets:
Derivatives not designated as cash flow hedging instruments:
Foreign exchange option contracts	$	340		$	221
Foreign exchange forward contracts		312			-
Total	$	652		$	221
Derivative liabilities:
Derivatives not designated as cash flow hedging instruments:
Foreign exchange option contracts	$	(24	)	$	(285	)
Foreign exchange forward contracts		-			(116	)
Total	$	(24	)	$	(401	)

Schedule of Unrealized Gains (Losses) on Derivatives

The net increase in unrealized gains recognized in “accumulated other comprehensive loss” on derivatives, net of tax effect, is as follows:

	Three months ended				Six months ended
	June 30,				June 30,
	2018		2017		2018		2017
	(unaudited)				(unaudited)
Derivatives designated as cash flow hedging instruments:
Foreign exchange forward contracts		-	$	66		-	$	975

Schedule of Derivative Gains (Losses) Reclassified From OCI Into Income

The net gains reclassified from “accumulated other comprehensive loss” into income, are as follows:

	Three months ended					Six months ended
	June 30,					June 30,
	2018		2017			2018		2017
	(unaudited)					(unaudited)
Derivatives designated as cash flow hedging instruments:
Foreign exchange forward contracts		-	$	(599	)		-	$	(994	)

Schedule of Changes in AOCI

The following table summarizes the changes in accumulated balances of other comprehensive income (loss), net of taxes, for the three months ended June 30, 2018 (unaudited):

	Unrealized gains (losses) on available-for-sale marketable securities			Unrealized gains (losses) on foreign currency translation			Total
Beginning balance	$	(943	)	$	(192	)	$	(1,135	)
Net other comprehensive income (loss) before reclassifications		(6	)		3			(3	)
Net current period other comprehensive income (loss)		(6	)		3			(3	)
Ending balance	$	(949	)	$	(189	)	$	(1,138	)

The following table summarizes the changes in accumulated balances of other comprehensive income (loss), net of taxes, for the six months ended June 30, 2018 (unaudited):

	Unrealized losses on available-for-sale marketable securities			Unrealized losses on foreign currency translation			Total
Beginning balance	$	(433	)	$	(178	)	$	(611	)
Net other comprehensive loss before reclassifications		(516	)		(11	)		(527	)
Net current period other comprehensive loss		(516	)		(11	)		(527	)
Ending balance	$	(949	)	$	(189	)	$	(1,138	)

The following table summarizes the changes in accumulated balances of other comprehensive income (loss), net of taxes, for the three months ended June 30, 2017 (unaudited):

	Unrealized gains (losses) on available-for-sale marketable securities			Unrealized gains (losses) on cash flow hedges			Unrealized gains (losses) on foreign currency translation			Total
Beginning balance	$	(108	)	$	533		$	(450	)	$	(25	)
Net other comprehensive income before reclassifications		5			66			186			257
Net gains reclassified from accumulated other comprehensive loss		-			(599	)		-			(599	)
Net current period other comprehensive income (loss)		5			(533	)		186			(342	)
Ending balance	$	(103	)	$	-		$	(264	)	$	(367	)

The following table summarizes the changes in accumulated balances of other comprehensive income (loss), net of taxes, for the six months ended June 30, 2017 (unaudited):

	Unrealized gains (losses) on available-for-sale marketable securities			Unrealized gains (losses) on cash flow hedges			Unrealized gains (losses) on foreign currency translation			Total
Beginning balance	$	(136	)	$	19		$	(207	)	$	324
Net other comprehensive income (loss) before reclassifications		33			975			(57	)		951
Net gains reclassified from accumulated other comprehensive income (loss)		-			(994	)		-			(994	)
Net current period other comprehensive income (loss)		33			(19	)		(57	)		(43	)
Ending balance	$	(103	)	$	-		$	(264	)	$	(367	)

Schedule of Reclassifications out of AOCI

Thefollowing table provides details about reclassifications out of accumulated other comprehensive income (loss) (unaudited):

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss					Affected Line Item in the Statements of Income
	Three months ended June 30,
	2018		2017
Unrealized gains on cash flow hedges, net	$	-	$	108		Cost of revenues
		-		363		Research and development
		-		92		Sales and marketing
		-		82		General and administrative
		-		645		Total, before income taxes
		-		(46	)	Income tax expense (benefit)
	$	-	$	599		Total, net of income taxes

Thefollowing table provides details about reclassifications out of accumulated other comprehensive income (loss) (unaudited):

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss					Affected Line Item in the Statements of Income
	Six months ended June 30,
	2018		2017
Unrealized gains on cash flow hedges, net	$	-	$	166		Cost of revenues
		-		570		Research and development
		-		151		Sales and marketing
		-		153		General and administrative
		-		1,040		Total, before income taxes
		-		(46	)	Income tax expense (benefit)
	$	-	$	994		Total, net of income taxes

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INVENTORIES (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Schedule of Inventories

NOTE 2:- INVENTORIES

	June 30, 2018		December 31, 2017
	(unaudited)
Raw materials	$	28,842	$	25,887
Finished goods		73,172		57,105
	$	102,014	$	82,992

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WARRANTY OBLIGATIONS (Tables)

6 Months Ended

Jun. 30, 2018

Product Warranties Disclosures [Abstract]

Schedule of Warranty Obligations

Changes in the Company’s product warranty liability for the six months ended June 30, 2018 and 2017 were as follows:

	Six months ended June 30,
	2018			2017
	(unaudited)
Balance, at beginning of period	$	78,811		$	58,375
Additions and adjustments to cost of revenues		27,546			12,976
Utilization and current warranty expenses		(9,066	)		(6,011	)
Balance, at end of period		97,291			65,340
Less current portion		(18,964	)		(12,501	)
Long term portion	$	78,327		$	52,839

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FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value

The following table sets forth the Company’s assets and liabilities that were measured at fair value as of June 30, 2018 (unaudited) by level within the fair value hierarchy:

	Balance as of		Fair value measurements
Description	June 30, 2018		Level 1		Level 2		Level 3
Cash equivalents:
Money market mutual funds	$	6,641	$	6,641		-		-
Derivative instruments assets, net	$	628		-	$	628		-
Short-term marketable securities:
Corporate bonds	$	128,847		-	$	128,847		-
Governmental bonds	$	5,974		-	$	5,974		-
Long-term marketable securities:
Corporate bonds	$	80,208		-	$	80,208		-
Governmental bonds	$	5,936		-	$	5,936		-

The following table sets forth the Company’s assets that were measured at fair value as of December 31, 2017 by level within the fair value hierarchy:

	Balance as of			Fair value measurements
Description	December 31, 2017			Level 1		Level 2			Level 3
Cash equivalents:
Money market mutual funds	$	6,163		$	6,163		-			-
Derivative instruments liability, net	$	(180	)		-	$	(180	)		-
Short-term marketable securities:
Corporate bonds	$	68,272			-	$	68,272			-
Governmental bonds	$	8,992			-	$	8,992			-
Long-term marketable securities:
Corporate bonds	$	95,160			-	$	95,160			-
Governmental bonds	$	7,960			-	$	7,960			-

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STOCK CAPITAL (Tables)

6 Months Ended

Jun. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Composition of Common Stock Capital

	Authorized				Issued and outstanding
	Number of shares
	June 30, 2018		December 31, 2017		June 30, 2018		December 31, 2017
	(unaudited)				(unaudited)
Stock of $0.0001 par value:
Common stock		125,000,000		125,000,000		45,498,414		43,812,601

Schedule of Stock Option Activity

A summary of the activity in the share options granted to employees and members of the board of directors for the six months ended June 30, 2018 (unaudited) and related information follows:

						Weighted
						average
				Weighted		remaining
	Number			average		contractual		Aggregate
	of			exercise		term		intrinsic
	Options			price		in years		Value
Outstanding as of December 31, 2017		3,524,310			7.40		6.35		106,251
Granted		180,983			38.05
Exercised		(1,219,007	)		4.86
Forfeited or expired		(22,677	)		8.46
Outstanding as of June 30, 2018		2,463,609			10.90		6.68		91,022
Vested and expected to vest as of June 30, 2018		2,395,526			10.81		6.66		88,724
Exercisable as of June 30, 2018		1,564,382			7.12		5.93		63,722

Schedule of RSU Activity

d. A summary of the activity in the RSUs granted to employees and members of the board of directors for the six months ended June 30, 2018 (unaudited) is as follows:

	No. of RSUs			Weighted averagegrant date fair value
Unvested as of December 31, 2017		2,087,992			24.33
Granted		531,729			48.15
Vested		(393,939	)		21.16
Forfeited		(125,989	)		6.62
Unvested as of June 30, 2018		2,099,793			30.71

Schedule of Options and RSUs Granted to Non-Employee Consultants

The Company has granted options and RSUs to purchase common shares to non-employee consultants as of June 30, 2018 (unaudited) as follows:

	Outstanding				Exercisable
	as of				as of
	June 30,		Exercise		June 30,		Exercisable
Issuance Date	2018		price		2018		Through
January 27, 2014		225		3.51		31	January 27, 2024
May 1, 2014		1,205		3.51		1,205	May 1, 2024
September 17, 2014		3,936		3.96		3,831	September 17, 2024
October 29, 2014		2,139		5.01		361	October 29, 2024
August 19, 2015		6,981		0.00		-	-
November 8, 2015		928		0.00		-	-
April 18, 2016		834		0.00		-	-
July 11, 2016		1,167		0.00		-	-
September 21, 2016		2,500		15.34		250	September 21, 2026
September 21, 2016		3,938		0.00		-	-
March 15, 2017		6,000		0.00		-	-
March 15, 2017		6,500		13.70		500	March 15, 2027
March 27, 2017		3,000		0.00		-	-
November 20, 2017		5,250		0.00		-	-
January 2, 2018		6,160		0.00		-	-
		50,763				6,178

Schedule of Recognized Stock-Based Compensation Expense

The Company recognized stock-based compensation expenses related to stock options and RSUs granted to employees and non-employees and ESPP in the condensed consolidated statement of operations for the six months ended on June 30, 2018 (unaudited) and 2017 (unaudited), as follows:

	Three months ended June 30,				Six months ended June 30,
	2018		2017		2018		2017
Cost of revenues	$	968	$	517	$	1,892	$	1,010
Research and development		2,605		1,280		4,987		2,485
Selling and marketing		2,094		1,204		4,298		2,234
General and administrative		1,461		1,033		2,800		1,917
Total stock-based compensation expense	$	7,128	$	4,034	$	13,977	$	7,646

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BASIC AND DILUTED NET EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Schedule of Computation of Basic and Diluted Net Earnings (Loss) Per Share

The following table presents the computation of basic and diluted net earnings per share for the periods presented (in thousands, except per share data):

	Three months ended June 30,				Six months ended June 30,
	2018		2017		2018		2017
	(unaudited)				(unaudited)
Numerator:
Net income	$	34,568	$	22,524	$	70,254	$	36,699
Denominator:
Shares used in computing net earnings per share of common stock, basic		45,216,253		41,700,399		44,726,382		41,525,285
Effect of stock-based awards		3,075,027		3,131,191		3,258,435		2,810,236
Shares used in computing net earnings per share of common stock,  diluted		48,291,280		44,831,590		47,984,817		44,335,521
Basic net income per share	$	0.76	$	0.54	$	1.57	$	0.88
Diluted net income per share	$	0.72	$	0.50	$	1.46	$	0.83

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INCOME TAXES (Tables)

6 Months Ended

Jun. 30, 2018

Income Taxes Tables

Schedule of Taxes on Income

Taxes on income (tax benefit) are comprised as follows:

	Three months ended June 30,						Six months ended June 30,
	2018			2017			2018			2017
	(unaudited)						(unaudited)
Current year taxes	$	5,314		$	959		$	12,297		$	2,028
Deferred tax income net, and others		(1,697	)		(773	)		(3,018	)		(2,603	)
Taxes on income (tax benefit)	$	3,617		$	186		$	9,279		$	(575	)

Schedule of Deferred Tax Assets and Liabilities

Significant components of the Company’s deferred tax liabilities and assets are as follows:

	June 30,		December 31,
	2018		2017
	(Unaudited)
Net assets in respect of:
Research and Development carryforward expenses- temporary differences	$	7,229	$	5,380
Stock based compensation		2,093		1,622
Allowances, provisions and others		2,229		1,338
Net deferred tax assets	$	11,551	$	8,340

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GENERAL (Narrative) (Details) € in Thousands, $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2017	Jun. 30, 2018 EUR (€)
Organization Consolidation and Presentation of Financial Statements [Line Items]
Accounts receivable pledged to offset accounts payable | $	$ 2,574		$ 2,574
Not Designated as Hedging Instrument [Member]
Organization Consolidation and Presentation of Financial Statements [Line Items]
Net gain (loss) on derivatives | $	$ 2,042	$ (672)	$ 625	$ (672)
Derivatives not designated as cash flow hedging instruments [Member] | Foreign exchange forward contracts [Member] | Put Option [Member]
Organization Consolidation and Presentation of Financial Statements [Line Items]
Derivative asset, notional amount | €						€ 22,500
Derivatives not designated as cash flow hedging instruments [Member] | Foreign exchange forward contracts [Member] | Call Option [Member]
Organization Consolidation and Presentation of Financial Statements [Line Items]
Derivative asset, notional amount | €						€ 22,500
Accounts Payable [Member]
Organization Consolidation and Presentation of Financial Statements [Line Items]
Concentration risk (as a percent)			58.30%		51.60%

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GENERAL (Schedule of Revenue from Contracts with Customers) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jan. 02, 2018	Dec. 31, 2017
Deferred Revenues - Current term	$ 3,407		$ 2,559
Deferred Revenues - Long term	47,595		31,453
Retained earnings	$ 132,554		66,172
Adjustments due following adoption of ASC 606 [Member]
Deferred Revenues - Current term			(89)
Deferred Revenues - Long term			3,961
Retained earnings			$ (3,872)
After Adjustment [Member]
Deferred Revenues - Current term		$ 2,470
Deferred Revenues - Long term		35,414
Retained earnings		$ 62,300

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GENERAL (Schedule of Impact of Adoption of Financial Statements) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Statements of operations
Revenues	$ 227,118	$ 136,099	$ 436,989	$ 251,153
Financial income (expenses), net	(2,480)	3,595	(1,896)	5,005
Net income	34,568	22,524	70,254	36,699
Cash flows
Net income	34,568	$ 22,524	70,254	36,699
Changes in assets and liabilities:
Deferred revenues	6,139		13,120	$ 6,935
Balance Sheets
Deferred Revenues - Current	(3,407)		(3,407)		$ (2,559)
Deferred Revenues - Long term	(47,595)		(47,595)		(31,453)
Retained earnings	(132,554)		(132,554)		$ (66,172)
Balances without adoption of ASC 606 [Member]
Statements of operations
Revenues	227,067		436,938
Financial income (expenses), net	(1,913)		(817)
Net income	35,084		71,282
Cash flows
Net income	35,084		71,282
Changes in assets and liabilities:
Deferred revenues	5,623		12,092
Balance Sheets
Deferred Revenues - Current	(3,413)		(3,413)
Deferred Revenues - Long term	(42,689)		(42,689)
Retained earnings	(136,426)		(136,426)
Effect of change [Member]
Statements of operations
Revenues	51		51
Financial income (expenses), net	(567)		(1,079)
Net income	(516)		(1,028)
Cash flows
Net income	(516)		(1,028)
Changes in assets and liabilities:
Deferred revenues	516		1,028
Balance Sheets
Deferred Revenues - Current	(6)		(6)
Deferred Revenues - Long term	(4,906)		(4,906)
Retained earnings	$ 3,872		$ 3,872

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GENERAL (Schedule of Fair Value of Derivative Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Derivative assets:
Derivative assets	$ 652	$ 221
Derivative liabilities:
Derivetive instrument fair value	(24)	(401)
Derivatives not designated as cash flow hedging instruments [Member] | Foreign exchange option contracts [Member]
Derivative assets:
Derivative assets	340	221
Derivative liabilities:
Derivative liabilities	(24)	(285)
Derivatives not designated as cash flow hedging instruments [Member] | Foreign exchange forward contracts [Member]
Derivative assets:
Derivative assets	312
Derivative liabilities:
Derivative liabilities		$ (116)

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GENERAL (Schedule of Unrealized Gains (Losses) on Derivatives) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivatives not designated as cash flow hedging instruments [Member] | Foreign exchange forward contracts [Member]
Unrealized gain (loss) on derivatives		$ 66		$ 975

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GENERAL (Schedule of Derivative Gains (Losses) Reclassified From OCI Into Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Foreign exchange forward contracts [Member] | Derivatives not designated as cash flow hedging instruments [Member]
Net gain (loss) reclassified from accumulated other comprehensive income (loss)		$ (599)		$ (994)

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GENERAL (Schedule of Changes in AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Beginning balance	$ (1,135)	$ (25)	$ (611)	$ (324)
Net other comprehensive income before reclassifications	(3)	257	(527)	951
Net gains reclassified from accumulated other comprehensive loss		(599)		(994)
Net current period other comprehensive income (loss)	(3)	(342)	(527)	(43)
Ending balance	(1,138)	(367)	(1,138)	(367)
Net unrealized gains (losses) on available-for-sale marketable securities [Member]
Beginning balance	(943)	(108)	(433)	(136)
Net other comprehensive income before reclassifications	(6)	5	(516)	33
Net gains reclassified from accumulated other comprehensive loss
Net current period other comprehensive income (loss)	(6)	5	(516)	33
Ending balance	(949)	(103)	(949)	(103)
Unrealized gains (losses) on cash flow hedges [Member]
Beginning balance		533		19
Net other comprehensive income before reclassifications		66		975
Net gains reclassified from accumulated other comprehensive loss		(599)		(994)
Net current period other comprehensive income (loss)		(533)		(19)
Ending balance
Net unrealized gains (losses) on foreign currency translation [Member]
Beginning balance	(192)	(450)	(178)	(207)
Net other comprehensive income before reclassifications	3	186	(11)	(57)
Net gains reclassified from accumulated other comprehensive loss
Net current period other comprehensive income (loss)	3	186	(11)	(57)
Ending balance	$ (189)	$ (264)	$ (189)	$ (264)

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GENERAL (Schedule of Reclassifications out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Financial income	$ (2,480)	$ 3,595	$ (1,896)	$ 5,005
Cost of revenues	145,172	89,033	275,446	165,411
Research and development, net	19,551	12,725	37,426	24,183
Sales and marketing	15,954	11,961	32,159	22,736
General and administrative	5,776	3,265	10,465	7,704
Total, before income taxes	38,185	22,710	79,533	36,124
Income tax expense (benefit)	3,617	186	9,279	(575)
Total, net of income taxes	34,568	22,524	70,254	36,699
Unrealized gains on cash flow hedges, net [Member] | Amount Reclassified from Accumulated Other Comprehensive Loss [Member]
Cost of revenues		108		166
Research and development, net		363		570
Sales and marketing		92		151
General and administrative		82		153
Total, before income taxes		645		1,040
Income tax expense (benefit)		(46)		(46)
Total, net of income taxes		$ 599		$ 994

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INVENTORIES (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 28,842	$ 25,887
Finished goods	73,172	57,105
Inventories	$ 102,014	$ 82,992

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WARRANTY OBLIGATIONS (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Changes in the Company's product warranty liability
Balance, at beginning of period	$ 78,811	$ 58,375
Additions and adjustments to cost of revenues	27,546	12,976
Utilization and current warranty expenses	(9,066)	(6,011)
Balance, at end of period	97,291	65,340
Less current portion	(18,964)	(12,501)
Long term portion	$ 78,327	$ 52,839

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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	$ 6,641	$ 6,163
Derivative instruments assets, net [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	628
Derivative instruments asset [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liabilities		(180)
Short-term marketable securities Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	128,847	68,272
Short-term marketable securities Governmental bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	5,974	8,992
Long-term marketable securities Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	80,208	95,160
Long-term marketable securities Governmental bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	5,936	7,960
Level 1 [Member] | Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	6,641	6,163
Level 1 [Member] | Derivative instruments assets, net [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets
Level 1 [Member] | Derivative instruments asset [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liabilities
Level 1 [Member] | Short-term marketable securities Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets
Level 1 [Member] | Short-term marketable securities Governmental bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets
Level 1 [Member] | Long-term marketable securities Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets
Level 1 [Member] | Long-term marketable securities Governmental bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets
Level 2 [Member] | Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets
Level 2 [Member] | Derivative instruments assets, net [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	628
Level 2 [Member] | Derivative instruments asset [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liabilities		(180)
Level 2 [Member] | Short-term marketable securities Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	128,847	68,272
Level 2 [Member] | Short-term marketable securities Governmental bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	5,975	8,992
Level 2 [Member] | Long-term marketable securities Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	80,208	95,160
Level 2 [Member] | Long-term marketable securities Governmental bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets	5,936	7,960
Level 3 [Member] | Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets
Level 3 [Member] | Derivative instruments assets, net [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets
Level 3 [Member] | Derivative instruments asset [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of liabilities
Level 3 [Member] | Short-term marketable securities Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets
Level 3 [Member] | Short-term marketable securities Governmental bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets
Level 3 [Member] | Long-term marketable securities Corporate bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets
Level 3 [Member] | Long-term marketable securities Governmental bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets

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COMMITMENTS AND CONTINGENT LIABILITIES (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($)
Non-cancelable purchase obligations	$ 321,135
Provision for contractual inventory purchase obligations	2,393
Contractual obligations for capital expenditures	35,810
Lawsuit claims	2,481
Office Rent Lease Agreements [Member]
Guarantees amount	1,389
Customs Transactions [Member]
Guarantees amount	55
Credit Card Limits [Member]
Guarantees amount	176
Securing Projects with Customers [Member]
Guarantees amount	$ 342

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STOCK CAPITAL (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 13,977	$ 7,646
Unrecognized compensation expense	$ 70,363
2007 Plan, Transferred to 2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options available for future grant under the plan	379,358
2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options reserved for issuance under the plan	8,080,717
Number of options available for future grant under the plan	3,611,297
2015 Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual increase percentage	5.00%
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options reserved for issuance under the plan	1,739,280
Number of options available for future grant under the plan	1,415,938
Maximum number of excess shares authorized	487,643
Number of Common stock purchased	323,342
Maximum percentage of salary	10.00%
Maximum amount authorized per person	$ 10
Maximum percentage of common stock	85.00%
ESPP [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual increase percentage	1.00%
Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options available for future grant under the plan	10,000,000
Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options exercised	$ 56,071
Weighted average grant date fair value of options granted	$ 20.83
Stock-based compensation	$ 835	$ 294

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STOCK CAPITAL (Schedule of Composition of Common Stock Capital) (Details) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Common stock capital
Par value	$ 0.0001	$ 0.0001
Authorized	125,000,000	125,000,000
Common stock, issued shares	45,498,414	43,812,601
Common stock, outstanding shares	45,498,414	43,812,601

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STOCK CAPITAL (Schedule of Stock Option Activity) (Details) - Option [Member] - Employees and Members of Board of Directors [Member] $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($) $ / shares shares
Number of Options
Outstanding as of December 31, 2017 | shares	3,524,310
Granted | shares	180,983
Exercised | shares	(1,219,007)
Forfeited or expired | shares	(22,677)
Outstanding as of June 30, 2018 | shares	2,463,609
Vested and expected to vest as of June 30, 2018 | shares	2,395,526
Exercisable as of June 30, 2018 | shares	1,564,382
Weighted average exercise price
Outstanding as of December 31, 2017 | $ / shares	$ 7.40
Granted | $ / shares	38.05
Exercised | $ / shares	4.86
Forfeited or expired | $ / shares	8.46
Outstanding as of June 30, 2018 | $ / shares	10.90
Vested and expected to vest as of June 30, 2018 | $ / shares	10.81
Exercisable as of June 30, 2018 | $ / shares	$ 7.12
Weighted average remaining contractual term in years
Outstanding as of December 31, 2017	6 years 4 months 6 days
Ountstanding as of June 30, 2018	6 years 8 months 5 days
Vested and expected to vest as of June 30, 2018	6 years 7 months 28 days
Exercisable as of June 30, 2018	5 years 11 months 4 days
Aggregate intrinsic Value
Outstanding as of December 31, 2017 | $	$ 106,251
Outstanding as of June 30, 2018 | $	91,022
Vested and expected to vest as of June 30, 2018 | $	88,724
Exercisable as of June 30, 2018 | $	$ 63,722

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STOCK CAPITAL (Schedule of RSU Activity) (Details) - Restricted Stock Units (RSUs) [Member] - Employees and Members of Board of Directors [Member]	6 Months Ended
	Jun. 30, 2018 $ / shares shares
Number of RSUs
Unvested as of December 31, 2017 | shares	2,087,992
Granted | shares	531,729
Vested | shares	(393,939)
Forfeited | shares	(125,989)
Unvested as of June 30, 2018 | shares	2,099,793
Weighted average grant date fair value
Unvested as of December 31, 2017 | $ / shares	$ 24.33
Granted | $ / shares	48.15
Vested | $ / shares	21.16
Forfeited | $ / shares	6.62
Unvested as of June 30, 2018 | $ / shares	$ 30.71

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STOCK CAPITAL (Schedule of Options and RSUs Granted to Non-Employee Consultants) (Details) - Options And RSUs [Member] - Nonemployee Consultants [Member]	Jun. 30, 2018 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	50,763
Exercisable at the end of the period	6,178
January 27, 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	225
Exercise price | $ / shares	$ 3.51
Exercisable at the end of the period	31
May 1, 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	1,205
Exercise price | $ / shares	$ 3.51
Exercisable at the end of the period	1,205
September 17, 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	3,936
Exercise price | $ / shares	$ 3.96
Exercisable at the end of the period	3,831
October 29, 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	2,139
Exercise price | $ / shares	$ 5.01
Exercisable at the end of the period	361
August 19, 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	6,981
Exercise price | $ / shares	$ 0.00
Exercisable at the end of the period
November 8, 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	928
Exercise price | $ / shares	$ 0.00
Exercisable at the end of the period
April 18, 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	834
Exercise price | $ / shares	$ 0.00
Exercisable at the end of the period
July 11, 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	1,167
Exercise price | $ / shares	$ 0.00
Exercisable at the end of the period
September 21, 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	2,500
Exercise price | $ / shares	$ 15.34
Exercisable at the end of the period	250
September 21, 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	3,938
Exercise price | $ / shares	$ 0.00
Exercisable at the end of the period
March 15, 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	6,000
Exercise price | $ / shares	$ 0.00
Exercisable at the end of the period
March 15, 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	6,500
Exercise price | $ / shares	$ 13.7
Exercisable at the end of the period	500
March 27, 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	3,000
Exercise price | $ / shares	$ 0.00
Exercisable at the end of the period
November 20, 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	5,250
Exercise price | $ / shares	$ 0.00
Exercisable at the end of the period
January 2, 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at the end of the period	6,160
Exercise price | $ / shares	$ 0.00
Exercisable at the end of the period

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STOCK CAPITAL (Schedule of Recognized Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 7,128	$ 4,034	$ 13,977	$ 7,646
Cost of revenues [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	968	517	1,892	1,010
Research and development [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	2,605	1,280	4,987	2,485
Selling and marketing [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	2,094	1,204	4,298	2,234
General and administrative [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 1,461	$ 1,033	$ 2,800	$ 1,917

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BASIC AND DILUTED NET EARNINGS PER SHARE (Narrative) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Anti-dilutive securities		199,950		395,032

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BASIC AND DILUTED NET EARNINGS PER SHARE (Schedule of Computation of Basic and Diluted Net Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator:
Net income	$ 34,568	$ 22,524	$ 70,254	$ 36,699
Denominator:
Shares used in computing net earnings per share of common stock, basic	45,216,253	41,700,399	44,726,382	41,525,285
Effect of stock-based awards	3,075,027	3,131,191	3,258,435	2,810,236
Shares used in computing net earnings per share of common stock, diluted	48,291,280	44,831,590	47,984,817	44,335,521
Basic net income per share	$ 0.76	$ 0.54	$ 1.57	$ 0.88
Diluted net income per share	$ 0.72	$ 0.50	$ 1.46	$ 0.83

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INCOME TAXES (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Dec. 31, 2017	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Additional income tax expense	$ 19,200	$ 3,900
Additional provisional charge		$ 800
Expected to reverse amount in future for income tax	500
One-time transition tax for foreign earnings	18,700
One-time transition tax for cumulative foreign earnings	$ 145,000

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INCOME TAXES (Schedule of Taxes on Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Taxes Schedule Of Taxes On Income Details
Current period taxes	$ 5,314	$ 959	$ 12,297	$ 2,028
Deferred tax income net, and others	(1,697)	(773)	(3,018)	(2,603)
Taxes on income (tax benefit)	$ 3,617	$ 186	$ 9,279	$ (575)

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INCOME TAXES (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Net assets in respect of:
Research and Development carryforward expenses - temporary differences	$ 7,229	$ 5,380
Stock based compensation	2,093	1,622
Allowances, provisions and others	2,229	1,338
Net deferred tax assets	$ 11,551	$ 8,340

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CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Revenues [Member] | One Major Customers [Member]
Concentration Risk [Line Items]
Concentration risk percentage	16.25%	13.31%	18.24%	13.05%
Accounts Receivable [Member] | One Major Customers [Member]
Concentration Risk [Line Items]
Concentration risk percentage			18.30%
Accounts Receivable [Member] | Two Major Customers [Member]
Concentration Risk [Line Items]
Concentration risk percentage					35.20%

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SUBSEQUENT EVENTS (Narrative) (Details) - 6 months ended Jun. 30, 2018 ₪ in Thousands, $ in Thousands	USD ($)	ILS (₪)
Assets purchase | $	$ 11,200
NIS [Member]
Assets purchase | ₪		₪ 41,000